Lab: Natural Selection-Standard Bio 4.2

Question 1

In this lab, the three flocks of birds changed in numbers between generation 1 and generation 3. Why? Check all reasons.

Revolt · Accepted Answer

If a flock’s beak type made it easier to pick up the available food, the flock grew.; If a flock’s beak type made it harder to pick up the available food, the flock shrunk.

Question 2

How does nature “select” phenotypes, such as bird beaks? Check all correct explanations.

Revolt · Accepted Answer

Traits that suit the environment enable an organism to reproduce in greater numbers.; Traits that do not suit an environment make it harder for an organism to stay alive and reproduce.

Question 3

With two foods (no fruit), Flock was the most successful.

Revolt · Accepted Answer

Y

Lab: Natural Selection-Standard Bio 4.2 Answers

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