Final Exam

Question 1

What is narrow sense heritability?

Answer 1

proportion of phenotypic variance due to additive genetic variance among individuals

OR extent to which we expect trait variation in to be passed from parents to offspring

Question 2

What is early reproduction selected by?

Answer 2

high predation of adults

Question 3

What is mutation accumulation?

Answer 3

late-acting genes subject to drift

Question 4

What does runaway sexual selection generate?

Answer 4

linkage disequilibrium

Question 5

What does anisogamy lead to?

Answer 5

biased operational sex ratio

Question 6

What is a transposable element?

Answer 6

conflict among loci in a genome

Question 7

What is anisogamy?

Answer 7

some gametes are really big (eggs), some are really small (sperm) – ie. animals, land plants

differences in gametes size means:

• eggs (and consequences of making them) are costly
• sperm are cheap

Question 8

What is isogamy?

Answer 8

same-sized gametes – ie. single-celled alga

Question 9

If the heritability of this trait is zero, what is the expected mean trait value of the offspring?

Answer 9

trait value of the original population (before selection)

Question 10

If the heritability of this trait is one, what is the expected mean trait value of the offspring?

Answer 10

trait value of the parents (after selection)