Lab: Natural Selection-Standard Bio 4.2

Question 1

Decide which examples are most likely to increase variation or decrease variation. Some examples could do both.Which of the following could possibly increase genetic variation indirectly?

Revolt · Accepted Answer

A: toxins; D: new habitat; F: increased food supply

Question 2

Changing can cause certain traits to be favored through This can lead to changes in .

Revolt · Accepted Answer

B: environmental factors

Question 3

The sum of the genetic traits in this population is called its .

Revolt · Accepted Answer

C: gene pool

Question 4

The transfer of genes from one population to another

Revolt · Accepted Answer

B: gene flow

Question 5

.

Revolt · Accepted Answer

A: natural selection

Question 6

There is a total of alleles in this population.

Revolt · Accepted Answer

C: 8

Question 7

Drives the changes that occur in populations

Revolt · Accepted Answer

D: natural selection

Question 8

Which of the following can typically decrease genetic variation?

Revolt · Accepted Answer

A: toxins; B: predator-prey relationships; C: competition; D: new habitat; E: disasters

Question 9

Changing can cause certain traits to be favored through This can lead to changes in .

Revolt · Accepted Answer

C: genetic variation

Question 10

A permanent change in the DNA sequence of a gene

Revolt · Accepted Answer

A: mutation

Lab: Natural Selection-Standard Bio 4.2 Answers

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