Lab: Natural Selection-Standard Bio 4.2 — Unit test

Question 1

Which of the following is least likely to change the gene pool of a population of chipmunks?

Revolt · Accepted Answer

A number of chipmunks die due to old age.

Question 2

Wisdom teeth are the third and final set of human molars that come in during the late teens or early twenties. In some cases, these teeth come in without problems, but they often have to be removed due to misalignment in the jaw, as shown below. Removal of the teeth does not cause any long-term complications in regard to eating.Which type of anatomic structure are wisdom teeth?

Revolt · Accepted Answer

vestigial

Question 3

Scientific investigations often lead to the formulation of new scientific questions. Charles Darwin reviewed his observations after he returned home from his voyage studying the selective breeding of pigeons. Which question would he be prompted to ask based on his voyage?

Revolt · Accepted Answer

Can selection in nature also lead to a new species over time?

Question 4

During a trip to the Galapagos Islands, which observation led Charles Darwin to suspect that organisms change over time?

Revolt · Accepted Answer

Island finches resembled mainland finches, but were not the same species.

Question 5

Which would most likely result in an increase in genetic variation in a population?

Revolt · Accepted Answer

a decrease in predators and an increase in food

Lab: Natural Selection-Standard Bio 4.2 — Unit test Answers

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