A biologist analyzes the DNA sequences of one gene in three different primates . The biologist finds that primates A and B have almost exactly the same DNA sequences for that gene. The DNA sequences in primate C are significantly different from those of A and B. This information allows the biologist to infer that:________

Answers

Answer 1
Answer:

The question is incomplete as it does not have the option which are:

  • primates A and B are more closely related to each other than either is to primate C.
  • all three primates appeared on Earth at about the same time.
  • either primate A or primate B must be a direct ancestor of primate C.
  • primate C must have been the ancestor of both primate A and primate B.

Answer:

Primates A and B are more closely related to each other than either is to primate C.

Explanation:

In the given question, on the basis of the given information, it can be predicted that the Primate A and B are more closely related to C as the DNA sequences of these two primates are almost similar. The similarity of the sequence suggests that these primates have descended or diverged from a common ancestor.

The DNA sequence of C is different from both A and B which shows that both A and B are different from the C.

Thus, the selected option is the correct answer.

Answer 2
Answer:

Answer:

The DNA sequencing is important for the determination of the evolutionary relationship with the organisms. The ancestory and descendants can also be identified by DNA sequencing.

Three primates A,B and C DNA sequences has been identified. It is given that primates A and B has same sequence and they are more closely related with each other. The primates C is unique and do not share relation with the primates A and B.  


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A hydrocarbon consists of four carbon atoms with one double bond. Predict the molecular formula of this compound.a. C4H8
b. C4H10
c. C4H4
d. C4H6

Answers

a. C4H8 is the answer.

A hydrocarbon consists of four carbon atoms with one double bond. Predict the molecular formula of this compound.

the awnser would be c4h8


What is the path that earth takes called?

Answers

the path that earth takes is called orbit

What are the functions of stoma and guard cells of plants?

Answers

Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata.

Which biological molecule is associated with iron (Fe) ions?A. Histone
B. Catalase
C. Chlorophyll
D. Hemoglobin
E. RNA polymerase

Answers

D) hemoglobin. It uses the iron ion to attract oxygen.

Which of the following is not true of saliva?A. cleanses the mouth
B. contains enzymes that begin the breakdown of proteins
C. moistens food and aids in compacting of the bolus
D. dissolves food chemicals so they can be tasted

Answers

The answer is B. contains enzymes that begin the breakdown of proteins.

Saliva is watery substance secreted by salivatory glands. It cleanses the mouth and maintenance oral hygiene. It moistens the food, so the created food bolus could easier pass into the esophagus. It also carries food chemicals to taste receptors so they can be tested. It contains enzymes involved in the food digestions. Some of them are amylase, which begins the breakdown of the starch, and lipase, which begins the breakdown of triglycerides. There are no enzymes in the saliva that break down proteins.

Final answer:

Saliva cleanses the mouth, moistens and compacts food, and dissolves food chemicals for taste.

Explanation:

Saliva is a clear liquid that is produced by the salivary glands in the mouth. It serves several important functions in the digestive process. It keeps the mouth clean by cleansing it and helps to remove food particles. Saliva moistens food and aids in the compacting of the food into a bolus, which can be easily swallowed. Additionally, saliva contains enzymes such as amylase that begin the breakdown of carbohydrates, not proteins. Lastly, saliva dissolves food chemicals so they can be tasted.

Learn more about Saliva here:

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Which example illustrates Darwin's main contribution to the theory of evolution? A. An agricultural pest has been exposed to a pesticide that wipes out the entire species. B. In a laboratory, a scientist chooses the most intelligent mice and breeds them to advance the species. C. When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce. D. In the African savannah, a scientist observes that a wildebeest calf has inherited its coat pattern from its father.

Answers

"When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce" is the one example that illustrates Darwin's main contribution to the theory of evolution. The correct option among all the options that are given in the question is the third option or option "C". I hope it helps you.

Answer:

C. When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce.

Explanation:

Darwin suggested natural selection as the mechanism that explained the evolution of species. This idea states that a population of individuals living in a certain environment is adapted to thrive in it. However, if there is a change in the environment, individuals must adapt in order to survive, otherwise they will die. Only a handful of individuals which had a particular (and random) variation before the change of the envirnonment will be able to adapt and survive. If the variation is heritable, the next generation will have that same trait and will be able to thrive in the new environment.

In the answer C., a population of bacteria is composed of some individuals which are susceptible to the antibiotic and some individuals that are resistand because they possess a mutation in their DNA that allows them to survive an environment with antibiotics. If no antibiotic is present, then both types of bacteria can survive. However, if they are exposed to the antibiotic, the previously resistant bacteria are the only ones that will be able to survive and reproduce.