A destiny with loneliness built into its DNA why, the DNA of the peoples of Easter Island is unique, there is a theory that suggests that long before Europeans discovered the island (in 1722), it served as a meeting place for the Polynesian people and Native Americans. Thus, the Rapa Nui would have in their DNA a mixture of these peoples. That theory was driven by an article published in 2014 that showed that today's Rapa Nui have 8% Native American DNA in their genome.
The why of solitary DNA
The Rapanui, who populated Easter Island,
Had no contact with the Native Americans until the arrival of the Europeans. Or if they did, it left no trace in their genes. That's what a study that analyzed ancient DNA of the island's inhabitants claims.These results call into question previous research that claims that there was contact and that it may have occurred several centuries earlier.
This is the first time Rapa Nui's ancestral DNA has been sequenced. It's the result? None of the five samples showed DNA from Native American ancestors.
What is right so far? It doesn't seem like much... the mysteries of Easter Island continue...
In this way, the author wanted to say that the DNA of the peoples of Easter Island is unique.
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4. The solar wind is a stream of electrically charged particles that extend outward from the
sun's
a corona.
b. chromosphere.
c. photosphere.
d. core.
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Answer:
I do__________________
Answer:
I do
Explanation:
What are characteristics of the left and right sympathetic trunks and ganglia?
Answer: Sympathetic trunks and ganglia are located immediately anterior! Hope This Helps! Happy Early Christmas! :D
Explanation: Sympathetic ganglia can be divided into two major groups, para-vertebral and prevertebral (or preaortic), on the basis of their location within the body. Paravertebral generally are located on each side of the vertebrae and are connected to form the sympathetic chain, or trunk.
are there any devices to stop incontinence in men post prostatectomy?
Answer: Urethral sling, artificial urinary sphincter may help.
Explanation:
function of nucleus, mitochondria ,endoplasmic reticulum, vacuoles
Answer:
nucleus...controls all the activities of the cell and carrries the genes
mitochondria..site for respiration that yields energy for the cell
endoplasmic reticulum... protein synthesis and lipids metabolism
vacuoles.... handle waste products and are responsible for regulation of osmotic pressure of a cell also
Explanation:
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A student is conducting a breeding experiment. She knows the genotype of one parent plant and concludes that she can use a Punnett square to predict the outcome of crossing the plant with another plant. Which statement best explains why this conclusion is incorrect?
a. She needs to know the phenotypes of the previous plant generation.
b. She needs to know the phenotype of the first plant.
c. She needs to know the genotypes of the previous plant generation.
d. She needs to know the genotype of the second plant.
D. She needs to know the genotype of the second plant.
What is a punnett square?A Punnett square is a tool used to predict the outcome of a genetic cross between two individuals. To use a Punnett square, you need to know the genotypes of both of the individuals involved in the cross. In this case, the student knows the genotype of one parent plant, but does not know the genotype of the second plant.
Therefore, she cannot use a Punnett square to predict the outcome of the breeding experiment. In order to do so, she would need to know the genotype of the second plant.
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a common fruit fly has eight chromosomes in a normal body cell. after a cell undergoes mitosis, how many chromosomes will each new cell have?
Answer:
Each daughter cell will have 8 chromosomes. That is correct. By the end of mitosis, there are two daughter cells. Each daughter cell will have the same amount of genetic material as the parent 8 chromosomes.
Explanation:
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Where do humans get the majority of their carbon from? (think biomolecules)
Answer:
Carbon is the most important element to living things because it can form many different kinds of bonds and form essential compounds.
Explanation:
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One difference between cell division in plant cells and in animal cells is that plant cells have
centromeres
chromatin
centrioles
a cell plate
plant cells do not have centrioles
Most igneous rocks form by which processes?
PLEASE SOMEONE HELP ME ILL GIVE YOU BRAINLIST ANSWER!!!
Answer:
C. Melting and Solidification
Explanation:
This image shows the offspring that result from a dihybrid cross between a plant with wrinkled green seeds and a plant with round yellow seeds.
The fact that the seeds can be one of two different colors shows that the chromosomes with the seed color gene must sort independently.
The fact that the seeds can be one of two different colors shows that the chromosomes with the seed color gene must sort independently.
The fact that the seeds can be one of two different textures shows that the chromosomes with the seed texture gene must sort independently.
The fact that the seeds can be one of two different textures shows that the chromosomes with the seed texture gene must sort independently.
The idea that alleles sort independently is supported by the fact that some second generation offspring have trait combinations that the first generation parents do not have.
The idea that alleles sort independently is supported by the fact that some second generation offspring have trait combinations that the first generation parents do not have.
The idea that alleles sort independently is supported by the fact that some second generation offspring have the same trait combinations that the first generation parents have.
How can this graphic be used to support the idea of independent assortment?
Answer:
The idea that alleles sort independently is supported by the fact that some second generation offspring have trait combinations that the first generation parents do not have.
retroviruses - Examples of RNA viruses are Cvid-19 or the virus that causes __
Answer:
The retrovirus known as human immunodeficiency virus (HIV) causes acquired immunodeficiency syndrome (AIDS) in humans.
Explanation:
question in the picture i’ll give brainliest !!
yes it is, let’s say B - is for brown hair and b - is for blonde hair
to have blonde hair they would have to have a bb genotype meaning that if bob had the Bb genotype then sally and bob have a 1/4th chance of having a blonde haired child
PLEASE HELP :(
ANSWER ALL 14 QUESTIONS WILL GIVE BRAINLIEST!
Chemical Energy and Food
1. Cellular respiration begins with a pathway called_______.
2. Is the following sentence true or false? Glycolysis releases less energy than aerobic respiration.
Overview of Cellular Respiration
3. Explain cellular respiration in your own words.
4. What is the equation for cellular respiration, using chemical formulas?
Fermentation
5. What is fermentation?
6. Because fermentation does not require oxygen, it is said to be____________.
7. What are the two main types of fermentation?
a.
b.
8. Explain the process of alcoholic fermentation.
9. During rapid exercise, how do your muscle cells produce ATP?
Energy and Exercise
10. When a runner needs quick energy for a short race, what source can supply enough ATP for about 90 seconds?
11. Why does a sprinter have an oxygen debt to repay after the race is over?
Comparing Photosynthesis and Cellular Respiration
12. If photosynthesis is the process that deposits energy in a savings account, then
what is cellular respiration?
13. How are photosynthesis and cellular respiration opposite in terms of carbon
dioxide?
14. How are photosynthesis and cellular respiration opposite in terms of oxygen?
produces less energy than aerobic respiration.
Answer:
1. Glycolysis
2.false (not sure)
3. Cellular respiration is the process through which cells convert sugars into energy.
4 C6H12O6 + 6O2 → 6CO2 + 6H20 + energy (Glucose + Oxygen yields Carbon Dioxide + Water + Energy)
5. Fermentation is a chemical process by which carbohydrates, such as starch and glucose, are broken down anaerobically.
6 anaerobic
7 alcoholic and lactic acid.
8 Alcoholic fermentation is a biotechnological process accomplished by yeast, some kinds of bacteria, or a few other microorganisms to convert sugars into ethyl alcohol and carbon dioxide. ... Alcoholic fermentation begins with the breakdown of sugars by yeasts to form pyruvate molecules, which is also known as glycolysis.
9 In this reaction, a phosphate group (in red) is transferred from phosphocreatine to ADP to form ATP very rapidly, allowing muscle contraction to continue for about 10 seconds. When phosphocreatine is depleted, the muscles must turn to metabolism of fuel molecules to produce more ATP to power physical activity.
10 At this point, the runners' muscle cells are producing most of their ATP by lactic acid fermentation, which can usually supply enough ATP to last about 90 seconds.
12 After that, the body begins to break down other stored molecules, including fats, for energy. If photosynthesis is the process that "deposits" energy in a "savings account," then what is cellular respiration? It is the process that "withdraws" energy.
13 Cellular Respiration and Photosynthesis are almost opposite processes because photosynthesis removes carbon dioxide from the atmosphere while cellular respiration puts back carbon dioxide. Cellular respiration uses oxygen and has it's waste product of carbon dioxide (CO2).
Explanation:
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Why does the stick immersed into water look bent? Explain with the ray diagram
Answer:
dhdhudhsusgiagwiwhw
Explanation:
Enter the following transactions into richard’s checkbook register and state his ending balance: date type description amount 03/01 check #204 blue sky apartments $455. 00 03/05 dep payroll automatic deposit $390. 36 03/08 debit benny’s hamburgers and fries $9. 20 03/15 check #205 car payment $251. 59 03/19 dep payroll automatic deposit $390. 36 a. $715. 79 b. $1,009. 81 c. $780. 72 d. $880. 24.
1) The by-products of cellular respiration include
A) energy and oxygen
B) glucose and oxygen.
C)carbon dioxide and water.
D) glucose and carbon dioxide.
water and carbon dioxide
Imagine that you are managing a large wildlife preserve that was formerly a cattle ranch. You know from historical accounts that wild sheep used to live there, but they were hunted until the local population was exterminated. After doing some research to determine what might be an appropriate starting population, you introduce them. Food is abundant and they have no natural predators. You then spend several years graphing the number of individuals (on the vertical axis) against the number of generations (on the horizontal axis). By the 10th generation, the population begins to reach carrying capacity.
Requried:
What BEST defines this mathematical model used in population studies?
The mathematical model used in this population study is known as the logistic growth model.
What is logistic growth model?The logistic growth model is a mathematical model that is used to describe the growth of a population over time. It is based on the idea that the growth of a population is limited by resources such as food, habitat, and space, and that as the population grows, the rate of growth begins to slow. This results in a curve that starts out steep and then levels off as the population approaches its carrying capacity, which is the maximum population size that can be sustained in a particular environment.
In the scenario described, the population of wild sheep is introduced to a wildlife preserve where food is abundant and there are no natural predators. This means that the population is able to grow at a relatively fast rate, but as the population increases, it begins to approach the carrying capacity of the preserve. At this point, the rate of growth begins to slow, and the population levels off.
This is reflected in the graph, which shows the population increasing rapidly at first and then leveling off as it reaches carrying capacity. The logistic growth model is often used to understand and predict the growth of populations in a variety of contexts, including agriculture, biology, and economics.
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What types of organisms photosynthesize?
Producers make their food . for ex: plants trees ,shrub, bushes . Whereas a consumer obtain food from other organisms.
the external urethral sphincter is under ___________ control.
Answer:
Skeletal muscular,it is under valuntary control of the somatic nervous system
a zebra cell is just about to replicate its dna. what will happen first?
Answer:
The DNA unravels to make two strands.
I think this is the right answer
. What is the width of Grandmother’s pelvis, measuring from the pelvic brim? How does her pelvis differ
from Grandfather’s?
The width of Grandmother’s pelvis, measuring from the pelvic brim is 2cm.
The grandmother has a wider pelvis than the grandfather.
The pelvic brim is found at the edge of the pelvic inlet and measures around
2cm. The pelvis in females are always wider than those found in males. This
is due to the adaptation of the female pelvis to child birth.
The pelvis being wider aids the passage of the foetus from the womb and
eases childbirth. This is the reason why the grandmother has a wider pelvis
than the grandfather.
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Help asap !!!! Which of these statements is true of the brightest stars? (1 point)
O They are yellow stars.
O Many are supergiants
O Several are white dwarfs.
O Each is part of the main sequence.
Answer:
Many are supergiants.
Explanation:
A star's size and core temperature determine its brightness. The brightest stars tend to be blue or blue white. Supergiants and red giants are in the region above the main sequence of stars, so that isn't true. Red are the dimmest. Yellow stars are in the middle of that spectrum. White Dwarfs are dimmer than the Sun, red giants and blue supergiants.
Which of the following are considered media ?
can you explain better ???
Which of the following is NOT a
response that the body would have
to a stimuli?
A. physical response
B. chemical response
C. creating a feeling
D. evolving the body
Answer:
c.
Explanation:
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What are the advantages and disadvantages of seed and spore reproduction? Justify whether seed reproduction or spore reproduction is more beneficial for the continuation of an organism.
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No Water Required
Seeds do not necessarily need water to germinate and grow, although some require water to soften the seed coat. Large seeds in dry conditions will hold water and allow the growing plant to grow deep roots without the need for rain or additional water.
Fully Developed Embryo
Inside each seed is a fully developed embryo that is ready to begin growing. Many seeds go through a dormancy period, which is a period when the seed will not germinate and begin growing. When conditions are right, the embryo germinates and begins growing. Having an embryo already grown gives a seed plant a better chance at survival as opposed to a spore.
Nourishment
Each seed contains nourishment for the embryo inside the seed. The endosperm is the tissue that surrounds the embryo inside the seed. The embryo uses nourishment provided by the endosperm as a jump start to begin growing.
The Seed Coat
The seed coat is one major advantage seeds have over spores. A spore is a single-celled organism that develops into a plant or fungus when the conditions are right. The spore has no outer protection.
Answer:
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Which is an example of how traits can be influenced by the environment?
A. coat color in Labrador retrievers B. reading ability of identical twins
C. flower color in pea plants D. blood type in humans
Answer:
C.
Explanation:
Environmental factors influence traits in plants and animals. These traits include things like weight, height, size, and color. If a dog does not get proper nutrition and exercise, their weight will be negatively impacted. The dog is likely to be overweight if the environmental factors are not changed.
What part of the cell divides during cytokinesis?
A. Cell Membrane
B. Nucleus
C. Mitochondria
D. DNA
5.5% of the _____ is covered in ice
Answer:
5.5% of the earth is covered in ice?
brainliest please!
The color of a certain fish is a CO dominant characteristic a blue fish and a yellow fish reproduced together what color are the baby fish?
what would the color of the fish be?
please help!
Cell cycle regulators are:
1. Proteins that control the progression of a cell through the cell cycle
2. Enzymes that remove a phosphate from proteins
3. Genes that code to destroy a cell if it becomes cancerous
4. Chemicals that slow down the growth of cells
Answer:
If this didn't help then vote me 1 star. Thanks.
Explanation:
Two groups of proteins, called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress of the cell the. A phosphatase is an enzyme that removes a phosphate group from a protein. Together, these two families of enzymes act to modulate the activities of the proteins in a cell, often in response to external stimuli. Rough the various checkpoints. What genes destroy cancerous cells? The primary function of the p53 gene is to repair or destroy defective cells, thereby controlling potential cancerous cells. This type of gene is called an anti-oncogene or tumor suppressor gene Cancer growth blockers are also called cancer growth inhibitors. They are a type of targeted cancer drug. Our body makes chemicals called growth factors that control cell growth. Cancer growth blockers work by blocking the growth factors that trigger cancer cells to divide and grow. There are many types of cancer growth blockers that work in different ways..