Lecture 21A

Question 1

sexual selection

Answer 1

individuals that posses certain heritable traits are more successful at attracting and obtaining mates

(eg:peacock)

Question 2

what are three different ways sexes can differ from eachother

Answer 2

morphology(shape, size)
behavior
physiology (difference in hormones)

Question 3

anisogamy

Answer 3

gametes of different sizes

Question 4

which sex makes many small gametes

Answer 4

makes

Question 5

which sex makes fewer, large gametes

Answer 5

females

Question 6

intrasexual competition

Answer 6

competition within a single sex
(males)

Question 7

intersexual selection

Answer 7

female mate choice
(choose mate based on male traits)

Question 8

what are the two main forms of sexual selections

Answer 8

intrasexual and intersexual

Question 9

intra and intersexual election can lead to what?

Answer 9

sexual dismorphism

Question 10

sexual dimorphism

Answer 10

differences between the sexes in traits often related to attracting and obtaining mates

Question 11

is sexual selection stronger on males or females

Answer 11

males

Question 12

reproductive success(fitness)

Answer 12

is harder to achieve in males than females

Question 13

sateliete/ female mimic

Answer 13

look like female but releasing sperm during mating instead

Question 14

sneaker

Answer 14

fish that swims quickly into a nest and releases sperm below spawning pair