Question

8. Which of the following is/are required for natural selection to occur in a population? Select...

8. Which of the following is/are required for natural selection to occur in a population? Select all that apply.

A) Individuals of a population vary B) Organisms tend to over-reproduce themselves C) There are limited resources for which individuals compete D) Modifications an organism acquires during its lifetime can be passed to its offspring E) Variations possessed by individuals of a population are heritable

9. Below are the same choices as question 8. Which of these potential requirements is/are not present in human populations?

A) Individuals of a population vary B) Organisms tend to over-reproduce themselves C) There are limited resources for which individuals compete D) Modifications an organism acquires during its lifetime can be passed to its offspring E) Variations possessed by individuals of a population are heritable

10. The life histories of five birds of the same species are listed below. Which is the most successful according to the theory of evolution?

A) Lives 5 years, lays 12 eggs in a lifetime, 4 hatch and grow up B) Lives 2 years, lays 8 eggs in a lifetime, 5 hatch and grow up C) Lives 6 years, lays 2 eggs in a lifetime, 2 hatch and grow up D) Lives 4 years, lays 7 eggs in a lifetime, 6 hatch and grow up E) Lives 5 years, lays 4 eggs in a lifetime, 3 hatch and grow up

11. A group of crickets hop onto a ship. The ship travels to a remote island where the group of crickets hop off and start a new population. Which of the following statements is/are true regarding this scenario? Select all that apply.

A) The new population of crickets on the remote island has less genetic diversity than the population they left. B) The new population of crickets on the remote island has more genetic diversity than the population they left. C) This is an example of natural selection. D) This is an example of genetic drift.

12. Mutation is a 1 process. Natural selection is a 2 process.

A) 1. Random, 2. random B) 1. Non-random and predictable, 2. Non-random and predictable C) 1. Random, 2. Non-random and predictable D) 1. Non-random and predictable, 2. random

Homework Answers

Answer #1

8.

A,C,E are right options.

There should be variations in organisms that can be inherited. Competition should be there for resources. Then only the best organism gets selected.

9.

B and D

Humans do not over reproduce like animals do. The changes that we aquire during the life will not be passed on to offspring.

10.

As per genetics and evolution, that organism which produces more offspring is the most fit organism.

Option B is the right one.

It is adding 5 offspring to the next generation in its life time of 2 years.

D is adding 6 offspring but in a life time of 4 years.

11.

The new population will have less genetic diversity because very few individuals have migrated. This is an example of genetic drift.

A and D are right options.

12.

Mutation is random and natural selection is predictable based on the conditions existing.

C is the right option.

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