Quiz 6

Question 1

What is non-random mating?

Answer 1

sexual selection

Question 2

What is inbreeding depression?

Answer 2

a decline in average fitness due to increase homozygosity

Question 3

How does homozygosity decrease fitness?

Answer 3

there are many recessive alleles

Question 4

What is sexual selection?

Answer 4

a type of natural selection that favors individuals who have a combination of heritable traits that are most useful in obtaining a mate

Question 5

What is sexual dimorphism?

Answer 5

when males are physically distinct from females

Question 6

What is the bateman-trivers theory?

Answer 6

“eggs are expensive, sperm are cheap”

Question 7

What is “asymmetry of sex”?

Answer 7

females invest a lot in each offspring, males dont

Question 8

What is male-to-male competition?

Answer 8

relies on physical beauty, parenting skills, and strength

Question 9

In what situation will males compete with each other for mates?

Answer 9

when there are equal numbers of males and females in a population