Lecture 11: Mating

Question 1

Why is mate choice important?

Answer 1

it is important when thinking about the competitive ability of your offspring

Question 2

What is mate choice?

Answer 2

being choosy such that particular aspects of traits will be passed one and will increase in frequency (if the can be passed down, heritable)

Question 3

How would you make sense of social interactions related to sexual reproduction?

Answer 3

1. Identify the sex types within the population. (makes & females or hermaphrodites)
2. describe the mating system: social sexual structure of a population.

Question 4

What are males?

Answer 4

Sex type that produce smaller gametes called sperm

Question 5

What are females?

Answer 5

Sex type that produce larger gametes called eggs

Question 6

What are Hermaphrodites?

Answer 6

A single indivgual that produce sperm and eggs

wither at the same time or at different times during your life (sequential or simultaneous)

Question 7

What is the mating system of Monogamy?

Answer 7

One male and one female

High levels of shared parental care

Question 8

What is polygyny?

Answer 8

1 male

multiple females

Question 9

What is Polyandry?

Answer 9

1 female

multiple males

Question 10

What is polygynandry?

Answer 10

multiple males & females

Question 11

What classifies polygynu, polyandry, and polygynandry?

Answer 11

They are all promiscuous mating systems.

Question 12

What are secondary sex characteristics?

Answer 12

Characteristics of males and females that are not directly involved in reproduction

Question 13

What is sexual selection?

Answer 13

Differences in reproductive rates among individuals as a result of differences in mating success

Question 14

What is Intrasexual sexual selection

Answer 14

Males fighting males for a mate

fighting witin the same sex

Question 15

What is intersexual sexual selection

Answer 15

Frogs have to call to get a mate.

or the ability for a male to get a female to mate with them.

Question 16

Why would female guppies want to male with brightly colored males if they are more obvious to predators?

Answer 16

Makes it easier for them to find one another

Question 17

Can flowers self pollinate?

Answer 17

No they cannot

Question 18

True or false:

Some plants exhibit non-random mating

Answer 18

True

not all pollen sires seeds equally

Question 19

True or false:

There sometimes appears to be interference competition, in which interactions between pollen inhibits pollen germination

Answer 19

True

Question 20

What is sexual conflict?

Answer 20

Asymmetry between sexes in potential evolutionary benefits and costs of any particular mating event.

Question 21

Why not have sex?

Answer 21

Risk of injury or disease,; costs time and energy.

Question 22

Females face what challanges when carrying young?

Answer 22

Decreased foraging efficiency and increased depredation risk while carrying male or offspring

Question 23

What is co-evolution?

Answer 23

reciprocal evolutionary interaction between two or more evolving groups (such as males and females)

Question 24

What is the sexual arms race?

Answer 24

Over the course of
evolution, conflicting
benefits/costs of mating
has led to coevolution of
armaments.