Hitchhiker’s thumb (H) is dominant to no hitchhiker’s thumb (h). A woman
who does not have hitchhiker’s thumb marries a man who is heterozygous for
hitchhiker’s thumb. What is the probable genotypic ratio of their
children?
Group of answer choices
50% Hh : 50% hh
100% HH : 0% hh
75% Hh : 25% hh
0% Hh : 100% hh
Answers
Answer:
there is a 50 50 chance
Explanation:
have a nice day!;)
The probable genotypic ratio of their children is 50% Hh : 50% hh because the man is heterozygous for the hitchhiker’s thumb, hence option A is correct.
What is a heterozygous condition?In some crosses, there are two conditions, in which some alleles are heterozygous and some are homozygous. In the homozygous trait, both alleles are the same, it may be dominant or recessive HH and hh, respectively.
The cross is between a woman who does not have a hitchhiker’s thumb and a man who is heterozygous for a hitchhiker’s thumb.
Cross: Hh X hh
Gametes: H and h
Genotype: Hh, Hh, hh, hh
Phenotype: 50% of hitchhiker’s thumb and 50% not having hitchhiker’s thumb.
The cross is attached in the image below.
Therefore, due to the heterozygous condition of man genotypic ratio of their children is 50% Hh: 50% hh.
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Related Questions
Which option describes a mass extinction?
А.
a large meteorite hits the Earth; many species rapidly disappear from the fossil record
B. the amount of sunlight on Earth Increases; organisms of a single species increase in number
C. glaciers cover the Earth; many species rapidly increase in number and take over
D
a small volcano explodes; organisms of a single species disappear
Answers
Why are there two numbers normally given when determining blood pressure?
Answers
Answer:
Both numbers are equally important and you need both. There are two because you need both.
Explanation:
When you go to take your blood pressure the top number is the systolic pressure and it measures the amount of pressure in your arteries during the contraction of your heart muscle. The bottom number is called the dialostic pressure and measures the amount of blood pressure of you heart muscle between beats. Healthy blood pressures numbers are 120 over 80, or 120/80.
Which of the following statements is true about niches?
I. New species can outcompete native species to fill a niche.
II. Extinction or emigration of a species can leave a niche vacant.
III. Some species occupy niches that no other species can fill.
Answers
Answer:
0
Explanation:
In the embryonic stage, which of the following develops before other parts of the body?
a) The head
b) The foot
c) The spine
d) The stomach
Answers
The head develops before other parts of the body in the embryonic stage. The correct option is a.
During embryonic development, the head is one of the first structures to form before other parts of the body. This early development of the head is a fundamental aspect of vertebrate embryogenesis. The process starts with the formation of the neural tube, which gives rise to the central nervous system, including the brain.
The development of the neural tube occurs early in embryogenesis and serves as a foundation for the subsequent development of other organ systems.
As the neural tube develops, it gives rise to the structures of the head, including the brain, face, and sensory organs. This initial development of the head provides the framework for the formation of other structures and systems in the body, such as the spinal cord, limbs, and internal organs.
While other parts of the body, such as the foot, spine, and stomach, will eventually develop during subsequent stages of embryonic development, the head takes priority in terms of early formation. The correct option is a.
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read the article and use the information to answer the following questions. cholera in haiti what events likely led to the outbreak of cholera in haiti?
Answers
The outbreak of cholera in Haiti was first reported in October 2010. It was the first time that this illness was seen in the country since 1960.
The outbreak of cholera in Haiti was first reported in October 2010. It was the first time that this illness was seen in the country since 1960. It was not known to be endemic in Haiti, which meant that it had not occurred there for at least the previous five years. Cholera is a bacterial illness that is transmitted through contaminated water or food. It causes severe diarrhea, vomiting, and dehydration. The illness can be fatal if left untreated. Cholera is known to occur in countries with poor sanitation and hygiene practices. It is also more likely to occur in areas with high population density, such as refugee camps or slums. In Haiti, a combination of factors likely led to the outbreak of cholera. The country was still recovering from a devastating earthquake that occurred in January 2010. Many people were living in crowded tent camps without access to clean water or sanitation facilities. In addition, heavy rains in the weeks before the outbreak likely contaminated the Artibonite River, which is a major water source for many people in the region. This contamination likely led to the spread of cholera throughout the area. Overall, the outbreak of cholera in Haiti was a tragic reminder of the importance of clean water and sanitation in preventing the spread of infectious diseases.
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HELPPPPPPPPPPPP 15 POINTS MARK BRANLIST
Granite is formed when _____. limestone is changed by heat and pressure sediment is cemented with calcite magma cools under the surface of the Earth lava spills onto the Earth's surface and cools
Answers
Answer:
Granite is formed when molten magma flows and cools underground.
Explanation:
Granite is an intrusive igneous rock, so it forms underground.
Answer:
Granite is formed when molten magma flows and cools underground.
Explanation:
The igneous rock granite could be pressed below the Earth's surface until it changes into the metamorphic rock gneiss.
Examine the following scenarios and label population growth regulation as: DD) Density Dependent or DI) Density Independent (1.5 pts) a. A tornado in Oklahoma wipes out a population of scrub pine trees. b. b. Adelie penguin mating pair cannot lay eggs because all the nesting sites are being occupied by other mating pairs. c. A pack of hyenas chase & take down 10 gazelles from a larger herd.
Answers
The labelling of population growth regulation as; Tornado wiping out a population of scrub pine trees are Density Independent, Adelie penguin mating pair cannot lay eggs due to occupied nesting sites are Density Dependent, and Pack of hyenas chasing and taking down gazelles from a larger herd are Density Dependent.
Tornado wiping out a population of scrub pine trees: DI (Density Independent)
Tornadoes are natural disasters that can cause widespread destruction and affect populations regardless of their size or density. The impact of a tornado on the scrub pine tree population is not directly influenced by the density of the population. Therefore, this scenario is an example of density-independent regulation.
Adelie penguin mating pair cannot lay eggs due to occupied nesting sites: DD (Density Dependent)
In this scenario, the availability of nesting sites directly affects the ability of the Adelie penguin mating pair to lay eggs. As the nesting sites become occupied by other mating pairs, the density of the population increases, leading to competition for limited resources. The regulation of mating pair reproduction based on the density of the population is an example of density-dependent regulation.
Pack of hyenas chasing and taking down gazelles from a larger herd: DD (Density Dependent)
The behavior of the pack of hyenas in chasing and taking down gazelles is directly influenced by the density of the gazelle population. As the herd size increases, there are more potential prey available, leading to increased hunting success for the hyenas. Therefore, this scenario exemplifies density-dependent regulation, as the predator-prey interaction is influenced by the density of the gazelle population.
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3. Air -suspended particle samples were collected using a High Volume Sampler (HVS) at a rate of one cubic meter per minute for 24 hours. One -quarter (1/4 part) of the particulate filter paper was extracted using an organic solvent and diluted to a level of 10 mL. If the concentration of polycyclic aromatic hydrocarbons (PAHs) recorded in the particle extraction is 0.5 ppb and the concentration of PAHs in the ‘blank’ filter paper is 0.01 ppb. What is the concentration of PAHs in the suspended particles in units of ng m-3? (10 MARKS)
Answers
The concentration of PAHs in the suspended particles in units of ng m-3:
concentration = mass/volume = 4.9 × 10-9 g/1440 m3 = 3.4 × 10-12 g m-3 = 3.4 ng m-3
If the concentration of polycyclic aromatic hydrocarbons (PAHs) recorded in the particle extraction is 0.5 ppb, and the concentration of PAHs in the ‘blank’ filter paper is 0.01 ppb, we can calculate the concentration of PAHs in the suspended particles in units of ng m-3.
Concentration of PAHs in extraction = 0.5 ppb
Concentration of PAHs in blank filter = 0.01 ppb
Therefore,
net PAHs concentration = 0.5 - 0.01 = 0.49 ppb = 0.49 μg L-1.
The volume of the sample = 10 mL or 0.01 L. Therefore, the mass of PAHs in the sample is:
mass = concentration × volume = 0.49 μg L-1 × 0.01 L = 4.9 ng = 4.9 × 10-9 g
The sample was collected for 24 hours, and the sampling rate is given as 1 m3 per minute. Therefore, the sampling
volume = 1 m3/minute × 60 minutes/hour × 24 hours = 1440 m3
Therefore, the concentration of PAHs in the suspended particles in units of ng m-3:
concentration = mass/volume = 4.9 × 10-9 g/1440 m3 = 3.4 × 10-12 g m-3 = 3.4 ng m-3
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you discover a fungus that contains a strange star-shaped organelle not found in any other eukaryotic cell you have seen. on further investigation, you find the following. 1. the organelle possesses a small genome in its interior. 2. the organelle is surrounded by two membranes. 3. vesicles do not pinch off from the organelle membrane. 4. the interior of the organelle contains proteins similar to those of many bacteria. 5. the interior of the organelle contains ribosomes. briefly describe how this organelle might have arisen?
Answers
The strange star-shaped organelle in the fungus might have arisen through endosymbiosis with a bacterium.
Endosymbiosis is a theory that proposes how eukaryotic cells evolved through the engulfment and integration of certain prokaryotic cells. In this case, the strange star-shaped organelle in the fungus possesses several characteristics that suggest it could have originated through endosymbiosis with a bacterium.
The presence of a small genome in the organelle's interior suggests it retains some genetic material, similar to mitochondria and chloroplasts, which are believed to have originated from endosymbiotic events.
The two membranes surrounding the organelle indicate that it may have been engulfed by the fungal cell, as seen in the engulfment of mitochondria and chloroplasts.
The absence of vesicle formation from the organelle membrane suggests that the organelle might have a different mechanism for protein trafficking and secretion compared to other eukaryotic cells.
The presence of bacterial-like proteins within the organelle's interior supports the idea that it originated from the engulfment of a bacterium.
The presence of ribosomes in the organelle indicates its ability to synthesize proteins, similar to mitochondria and chloroplasts.
Overall, these characteristics align with the theory of endosymbiosis, suggesting that the strange star-shaped organelle in the fungus might have originated through the incorporation and integration of a bacterial cell into the fungal cell.
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What are the four major blood groups?
A: A, B, O and AO
B: AB- O+, AB+, and O-
C: A, B, AB, and O
D:A, B, C, and D
Help plsss
Answers
6. Your friend is trying to gain some more muscle and has started lifting weights.
You read that muscle structure is primarily built by putting amino acids together through protein synthesis.
What foods should you recommend to your friend, so that they can increase the amount of amino acids in their diet?
1. Identify a food from the selection that they should eat.
2. Explain how you know that food has the macromolecule they need.
Answers
Answer:
He should start out doing little amount , any workout his wants but try to hold the weight for 1 min , making sure that he doesn't lift too fast instead he should do them slow and hold it for a while for he can feel the burn in his muscle and with time add the reps and hold it longer
Explanation:
Identify the bonds formed between RNA nucleotides by RNA polymerase.
A. Ester
B. Glycosidic
C. Peptide
D. Phosphodiester
Answers
Answer:
D. Phosphodiester
Explanation:
Just as the DNA polymerase serves as a catalyst in the replication of the DNA, so does the RNA polymerase speed up the formation of the RNA. RNA polymerase performs its function of linking nucleotides when the phosphodiester bonds are formed in the 5' to 3' sequence. Nucleoside triphosphate precursors such as the Adenosine triphosphate, Cytosine triphosphate, and Guanosine triphosphate serve as the substrates that allow the formation of the RNA molecule.
When the RNA polymerase unwinds the double helix structure of the DNA found before the active site where the polymerization will occur, substrates can then pair themselves in a complementary form.
Describe the process of photosynthesis, in your own words.
Answers
Answer:
Photosynthesis is process by which green plants manufacture their food by making use of carbon dioxide and water in the presence of sunlight
Clown fish live in the waving tentacles of sea anemones in the ocean. The sea
anemone provides a safe place for the clown fish to escape predators. The sea
anemone, although it has poisonus tentacles, does not bother the clown fish and is
not harmed by the clown fish. This relationship between organisms can be described
as-
a- commensalism
b- mutualism
c- parasitism
d- predation
Answers
Answer:
d i thank?
Explanation:
What are the general climate regions on earth?
Answers
The Earth has three main climate zones: tropical, temperate, and polar.
Answer: warm, hot, cold, chilly
Explanation:
Which of the following sentences are the best short summary for a flashlight?A A flashlight flashlight has has many many uses.uses.A A flashlight flashlight is is able able to to create create light light energy, energy, which which allows allows us us to to see see in in the the dark.dark.A A flashlight flashlight is is a a necessary necessary tool tool for for every every household.household.A A flashlight flashlight is is a a portable, portable, battery-battery-operated operated device device that that makes makes light.light.
Answers
Answer:
The last one
Explanation:
Flashlight is a portable, battery-operated device that makes light.
A flashlight is a portable, battery operated device that makes light is the best short summary for a flashlight.
What are the features of flashlight?A flashlight or torch is a portable hand-held electric lamp. Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes since the mid-2000s.
The three main features for a flashlight are Dimensions, Battery, and Light. Each of these characteristics are very important when it comes to selecting a flashlight.
Flashlights are used as a light source outdoors, in places without permanently installed lighting, during power outages, or when a portable light source is needed.
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A woman with normal blood clotting mates with a man who has hemophilia. Their first child is a boy who has hemophilia. Tests show that the father and son both have the same form of hemophilia, that it is X-linked recessive, and that the boy has normal genetic inheritance. You can predict that if the couple produces more children together, then the odds are that: 7 tion Select one: O a. Half of the boys and none of the girls will have hemophilia. b. None of the rest of the children should have hemophilia. c. Half of the boys and half of the girls will have hemophilia. d. All of the children will have hemophilia.
Answers
The correct option is A. Half of the boys and none of the girls will have hemophilia . This scenario, we have a woman with normal blood clotting (presumably carrying two normal X chromosomes) and a man with hemophilia .
Hemophilia is a rare genetic disorder characterized by impaired blood clotting. It is caused by a deficiency or malfunction of specific clotting factors in the blood, namely Factor VIII (hemophilia A) or Factor IX (hemophilia B). These factors are crucial for normal clot formation and prevention of excessive bleeding. People with hemophilia experience prolonged bleeding even from minor injuries, and spontaneous internal bleeding can also occur.
Symptoms include easy bruising, joint pain, and prolonged bleeding after dental procedures or surgeries. Hemophilia is usually inherited, with symptoms more commonly observed in males. Treatment involves replacing the deficient clotting factors through infusions, managing bleeding episodes with medications, and adopting measures to prevent injuries.
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Photosynthesis Puzzle #3
Puzzle 4
Why are these images grouped together?
They must have something in common.
Answers
Answer:
They all have cholorophyll
Explanation:
Or we can say they carry out photodynthesis and make food.
See, all the pictures are green, this green pigment (colour ) is cholorophyll.
The first, second and fourth are pictures of leaves [which makes food] and the third picture is a illustration of the mitochondria.
Hope it helps!
Answer:
what's common between them is the colour green which is caused by chlorophyll
Explanation:
chlorophyll are green pigments in a leaf which facilitates sun light absorption for the leaf .Even the a structure is shown the picture
hydrophobic substances question 13 options: a) can easily diffuse through lipid bilayers b) require transmembrane channels to diffuse through lipid bilayers c) are blocked by the hydrophilic core of a lipid bilayer d) are selectively transported across lipid bilayers.
Answers
The correct option is (a). Hydrophobic substances can easily diffuse through lipid bilayers. A lipid bilayer is a double layer of lipids that forms the core of nearly all cell membranes.
Hydrophobic substances can easily diffuse through lipid bilayers. A lipid bilayer is a double layer of lipids that forms the core of nearly all cell membranes. A lipid bilayer consists of two layers of hydrophobic (water-repelling) phospholipids, which face inward and surround a layer of hydrophilic (water-loving) molecules. The membrane is selectively permeable to allow the exchange of specific materials in and out of the cell. Small, uncharged molecules, such as hydrophobic substances, can easily diffuse through the lipid bilayer. Hydrophobic molecules are repelled by water molecules and attracted to lipid molecules, allowing them to diffuse through the membrane. Some examples of hydrophobic molecules that can easily diffuse through lipid bilayers include carbon dioxide and oxygen.
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Explain how you would determine whether the contact between
sandstone that overlies basalt is a non-conformity or is the result
of intrusive contact metamorphism.
Answers
To determine whether the contact between sandstone that overlies basalt is a non-conformity or the result of intrusive contact metamorphism, you would examine the characteristics of the contact zone and the relationship between the two rock layers.
In the case of a non-conformity, the sandstone would be deposited on top of the eroded surface of the basalt, indicating a significant time gap between the formation of the basalt and the deposition of the sandstone.
The contact zone would show signs of erosion, such as angular unconformity or evidence of weathering.
On the other hand, if the contact is the result of intrusive contact metamorphism, there would be signs of thermal alteration and contact metamorphic effects in the sandstone near the contact zone.
The sandstone would show changes in texture, mineralogy, and color due to the heat and chemical alteration caused by the intrusion of the hot basalt magma.
To make a conclusive determination, you would need to carefully examine the contact zone, observe the characteristics of both rock layers, analyze the mineralogical and textural changes, and consider the geological context of the area.
This may involve conducting field observations, collecting rock samples, and conducting laboratory analyses to identify the presence of metamorphic minerals or other evidence of intrusive contact metamorphism.
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At which classification level could two organisms belonging to the same group have the LEAST
in common?
class
family
order
species
Answers
Explanation:
Species but dot take my word on it is was an educated guess
Answer:
Explanation:
Species
kingdom is further split into phylum or division, class, order, family, genus, and species, which is the smallest group.
The science of classifying organisms is called taxonomy and the groups making up the classification hierarchy are called taxa.
if a vector not have origin of replication result in what
Answers
Answer:
What will be the consequence of not having an origin of replication (ori) in the vector? Explanation: In the case ori is absent, the vector won't be able to replicate
Explanation:
As the replication won't take place, only one of the daughter cells would be having the vector. A colony of transformed colonies won't be obtained.
if a vector does not has the origin of replication result in not doing replication as the unit of replication is Ori.
In the case Ori is absent, the vector may not be capable of replicating. As the replication may not take place, the handiest one of the daughter cells might be having the vector. A colony of converted colonies may not be obtained.
What is transgene?
Of these, the maximum usually used vectors are plasmids. Common to all engineered vectors have a foundation of replication, a multi cloning site, and a selectable marker. The vector itself is normally a DNA series that includes an insert (transgene) and a bigger series that serves as the "backbone" of the vector.
Thus it is clear that if a vector does not have an origin of replication result in nonreplicating.
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name six factors which affect the rate of alcoholic fermentation
Answers
Answer:
Factors Impacting the Malolactic Fermentation. Several factors impact the initiation and progression of the malolactic fermentation. Temperature, pH, acidity, ethanol, sulfite and availability of nutrients are all important for the growth and metabolic activities of the lactic acid bacteria.
Answer:
1. Temperature
2. pH
3. acidity
4. ethanol
5. sulfite
6. substarte (sugar) concentration
Explanation:
what 2 factors will the selectively permeable cell membrane use to select what can enter or leave the cell? I wrote size but what else?
Answers
Neuromodulation is the release of chemicals (other than ____________ ) from cells that locally regulate or alter the response of neurons to neurotransmitters. The substances released are called ____________ . Neuromodulation generally results in either facilitation or inhibition. When there is greater response from a postsynaptic neuron because of the release of neuromodulators it is ____________ . This may result from either ____________ amount of neurotransmitter in the synaptic cleft or ____________ number of receptors on postsynaptic neurons. When there is less response from a postsynaptic neuron because of the release of neuromodulators, it is called ____________ . This results from either ____________ amount of neurotransmitter in the synaptic cleft or ____________ number of receptors on postsynaptic neurons.
Answers
Answer:
Neurotransmitters; neuromodulators; facilitation; an increased; an increased; inhibition; a decreased; a decreased.
Explanation:
In Biology, stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ.
Neuromodulation is the release of chemicals (other than neurotransmitters ) from cells that locally regulate or alter the response of neurons to neurotransmitters. The substances released are called neuromodulators. Neuromodulation generally results in either facilitation or inhibition. When there is greater response from a postsynaptic neuron because of the release of neuromodulators it is facilitation. This may result from either an increased amount of neurotransmitter in the synaptic cleft or an increased number of receptors on postsynaptic neurons. When there is less response from a postsynaptic neuron because of the release of neuromodulators, it is called inhibition. This results from either a decreased amount of neurotransmitter in the synaptic cleft or a decreased number of receptors on postsynaptic neurons.
Hemosiderin found in macrophages and PMNs in lung tissue indicate which of the following?
a. Aggregation
b. Anemia
c. Pulmonary congestion
d. Transudation
Answers
Hemosiderin found in macrophages and PMNs in lung tissue indicates (Option c.) Pulmonary congestion.
Hemosiderin is a pigment that results from the breakdown of hemoglobin, the iron-containing molecule found in red blood cells. It is typically stored within macrophages and neutrophils (PMNs) in tissues.
In the context of lung tissue, the presence of hemosiderin in macrophages and PMNs suggests pulmonary congestion. Pulmonary congestion refers to the accumulation of fluid, often blood or blood-derived components, within the lungs. It can occur due to various conditions such as heart failure, inflammation, or lung damage.
The presence of hemosiderin indicates that red blood cells have leaked into the lung tissue, possibly due to increased blood vessel permeability or congestion. Macrophages and PMNs phagocytose the leaked red blood cells and store the iron pigment, hemosiderin, as a result.
Therefore, the presence of hemosiderin in macrophages and PMNs in lung tissue is an indication of pulmonary congestion.
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Which is NOT needed to complete photosynthesis?
A. water
B. oxygen
C. sunlight
D. carbon dioxide
Answers
which stages of aerobic cellular respiration release carbon dioxide waste?
Answers
The citric acid cycle is the phase of cellular respiration where carbon dioxide is released. The citric acid cycle, the electron transport chain, and glycolysis make up the three phases of aerobic cellular respiration.
The Krebs cycle, the Link reaction, and glycolysis are the three stages of cellular respiration that oxidize the glucose molecule to carbon dioxide.
The process that takes place in the mitochondria of a living thing is called cellular respiration. Water and carbon dioxide are emitted as waste during this procedure. It is a metabolic process that converts glucose into ATP.
Anaerobic respiration does not require oxygen to occur, unlike aerobic respiration. Anaerobic respiration, which occurs in microorganisms like yeast, a unicellular (or single-cell) fungal, is known as fermentation. This process results in the production of carbon dioxide and an alcohol variant called ethanol.
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Answer:
The stage of cellular respiration in which carbon dioxide release takes place is the citric acid cycle.
After eating a sugary snack, a person's blood sugar
level may rise for a short period of time. Which
statement describes the body's way of restoring
homeostasis?
A. The brain will stimulate the body to sweat
in order to increase blood sugar levels.
O B. The brain will stimulate the cells to produce
more sugar, increasing blood sugar levels.
C. The brain will stimulate the cells to
maintain the elevated blood sugar levels.
O D. The brain will stimulate the release of a
chemical that will lower blood sugar levels.
Answers
Pls help and thank youuuu:)
Answers
Answer:
A
Explanation:
Answer:
D.
Explanation: