Lab: Natural Selection-Standard Bio 4.2

Question 1

The birds shown above have beaks with three different shapes and sizes. These genetic variations in the beak each appeared initially due to

Revolt · Accepted Answer

B: mutations.

Question 2

Look at the three beaks. Which flock’s birds have beaks that seem most likely to be able to pierce a piece of fruit?

Revolt · Accepted Answer

A: Flock X

Question 3

Suppose that a plant disease kills all the fruit. The change could become a on the birds.

Revolt · Accepted Answer

B: selective pressure

Question 4

Check all correct elements below that you included in your question.

Revolt · Accepted Answer

A: The independent variable is the type of food available.; B: The dependent variable is the frequency of each type of beak (or number of birds with each beak type).

Question 5

Check all possible effects of this selective pressure.

Revolt · Accepted Answer

A: Flock X may try to eat other foods.; B: Flock X could migrate in search of fruit.; C: Flock X could slowly decrease in number.; D: Flocks Y and Z could benefit and increase.

Lab: Natural Selection-Standard Bio 4.2 Answers

More from this Course

TRY EDGENUITY HACKS