BIOLOGY HIGH SCHOOL

Which statement below best describes the role of mutations in evolution by natural selection? A Mutations increase the genetic variation within a population, and each of the variants provides an advantage under different circumstances
B Mutations increase the genetic variation within a population, and some of the variants may provide an advantage to individuals over time
C Mutations help stabilize the genetic variation within a population, and only one or two variants generally provide an advantage to individuals.
D Mutations help reduce the genetic variation within a population, and thus increasing the rate that new adaptations develop.

Answers

Answer 1
Answer:

The role of mutations in evolution by natural selection is option b. Mutations increase the genetic variation within a population.

Role of mutation in evolution:

The mutation is significant as the first step of evolution since it developed the new DNA sequence for the specific gene that developed the new allele.

Also, at the same time, it rise the genetic variation within the population also it provides as an advantage to individual

hence, the option b is correct.

Learn more about mutation here: brainly.com/question/14844437
Answer 2
Answer:

Answer:

B. Mutations increase the genetic variation within a population, and some of the variants may provide an advantage to individuals over time

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Lobe three is involved in hearing, speech, and memory. What is it called? a) Temporal lobe b) Frontal lobe c) Parietal lobe d) Occipital lobe

Answers

Answer:

A) Temporal Lobe

Explanation:

The temporal lobe is involved with processing auditory information, short-term memory, and speech.

Answer:

A

Explanation:

What is the leading cause of water contamination in countries without water treatment plants?

Answers

Answer: Sewage

Explanation:

The leading cause of contamination in the countries without having water treatment plants is sewage. The sewage disposal is the main waste that needs to be treated.

Sewage has many harmful bacteria growing on it. This can be unhealthy if people are exposed to it. Sometimes the pipes leakage can take place infecting the nearby water bodies.

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What is the probability that a person who is older than 35 years has a hemoglobin level between 9 and 11? Select one of the options below as your answer:



A.
0.257




B.
0.284




C.
0.312




D.
0.356




E.
0.548

Answers

1. The probability that a person who is older than 35 years has a hemoglobin level between 9 and 11 is 0.284.

2. The probability that a person who is older than 35 years has a hemoglobin level of 9 and above is 0.531.

What is probability?

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty.

Given

Let the number of person who is older than 35 years has a hemoglobin level between 9 and 11 be x.

From the given table it is clear that the total number of person who is older than 35 years is 162.

76+x+40 = 162

116+x = 162

x = 46

The number of person who is older than 35 years has a hemoglobin level between 9 and 11 is 46.

1.The probability that a person who is older than 35 years has a hemoglobin level between 9 and 11 is

P = 46/162 = 0.62

The probability that a person who is older than 35 years has a hemoglobin level between 9 and 11 is 0.284.

Person who is older than 35 years has a hemoglobin level  of 9 and above is 40+46 = 86

The probability that a person who is older than 35 years has a hemoglobin level of 9 and above is

P = 82/162 = 0.531

The probability that a person who is older than 35 years has a hemoglobin level of 9 and above is 0.531.

To know more about probability refer to :

brainly.com/question/13604758

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Answers

Answer:

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Explanation:
All life on earth depends on energy through the ecosystem

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Answers

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