Sexual Selection

Question 1

Sexual Reproduction (2)

Answer 1

Combination of Gametes
eukaryotes only

Question 2

sexual selection is a subset of

Answer 2

natural selection

Question 3

Single sex type

Answer 3

individuals have 1 one reproductive function

Question 4

Hermodaphrodite

Answer 4

species which contain individuals that can perform male and female reproductive functions

Question 5

instantanneous hermaphrodite

Answer 5

performs male or female functions at same time
ie. earthworm

Question 6

Sequential hermaphrodite

Answer 6

changes sex over time
ie clownfish, indo pasific cleanser wrasse

Question 7

Protandrous hermaphrodite (C)
subsection of sequential

Answer 7

-live in groups of male(sexually immature) and female breeding pair
-once female removed from population the next biggest male becomes breeding male and the prior breeding male turns female
-clownfish

Question 8

protogynous hermaphrodite

Answer 8

-live in groups with one male and smaller females
-if male dies largest female changes sex in 2 weeks

Question 9

what is the common sex type in plant, where are the reproductive organs situated in angiosperms?

Answer 9

hermaphroditic
stamens and pistils organized together

Question 10

Conifer sex type

Answer 10

Monoecious
malke and female cones on this bitch
female top, male bottom

Question 11

Monogamy

Answer 11

-one male and one female in exclusive relationship for some time
-may be sired by another male

Question 12

Genetic Monogamy

Answer 12

-parents raise offspring
-full fidelity

Question 13

Social Monogamy

Answer 13

-parents raise offspring but
-not full fidelity
-90% of songbirds experience social monogamy

Question 14

fairywrens

Answer 14

social monogomy, hella of these mfs gettin cucked

Question 15

why did monogamy evolve? (4)
anisogamy

Answer 15

-Anisogamy:females more selective since gametes larger and cost more energy-female got bigger gamete
-both parents required to maintain
-partners rare
-reduction in STD

Question 16

Promiscuity

Answer 16

several sexual partners

Question 17

polygyny

Answer 17

1 male multiple females

Question 18

polyandry

Answer 18

1 female multiple males

Question 19

polygyandry

Answer 19

multiple everyone

Question 20

secondary sexual characteristics

Answer 20

-traits found that not directly involved in reproduction-cannot be described by natural selection –> sexual selections

Question 21

intersexual selection

Answer 21

individuals consistantly choose mates among members of opposite sex based on particular trait
often bright coloration, dance, singing

Question 22

intrasexual selection

Answer 22

individuals of one sex compete among themselves for mates
sometimes have mechanisms that settle conflicts w/o physical aggression

Question 23

handicap principle

Answer 23

somtimes secondary sexual characteristics so there is a maximum they can go to before they start to fuck bro over

Question 24

why are female signals underappreciated

Answer 24

darwin says there is a struggle between MALES for possession of the females

Question 25

Armaments and onaments limits of sexual selection

Answer 25

Armaments: risk of injury during combat
inhibits animal from using some resources
ornament: predation, physiologically expensive

Question 26

Sexual Conflict

Answer 26

-Behavioural or physical traits that enhance the fitness of one sex that comes to the cost of the other
-mating inexpensive for males, but is for females

Question 27

sexual arms race

Answer 27

leads to coevolution of armaments within species