Practice Test

Question 1

Which best describes how the population has evolved?

Revolt · Accepted Answer

B: The population has evolved because there was a change in allele frequencies.

Question 2

Why do a chicken embryo and a cow embryo look very similar even though the adults do not?

Revolt · Accepted Answer

A: They are distantly related, so their development is similar.

Question 3

What hypothesis did Darwin investigate by studying the breeding of pigeons with distinctive traits?

Revolt · Accepted Answer

D: New species can appear gradually through small changes in an ancestral species.

Question 4

These notes were taken during a class about biological evolution, but the subject title is missing. -results from immigration -new genes brought into a population -variation in a population increases What do the notes describe?

Revolt · Accepted Answer

B: gene flow

Question 5

Which of these are most likely homologous structures?

Revolt · Accepted Answer

D: bat wing and  Tyrannosaurus  arm

Question 6

Which is the best description of the two organisms highlighted in orange?

Revolt · Accepted Answer

A: They share a recent common ancestor.

Question 7

Osteichthyes is a group of fish that have the derived characteristics of jaws and true bones. Which letter corresponds to where Osteichthyes belongs on the cladogram?

Revolt · Accepted Answer

A: A

Question 8

Which statement about the giraffes explains their evolution based on Charles Darwin’s main points?

Revolt · Accepted Answer

D: Long necks were a random genetic change and resulted in the gradual increase of organisms with long necks.

Practice Test Answers

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