Mechanisms/Rates Of Speciation P2

Question 0

When it works with natural selection:

Answer 0

Direct benefit to females
Good genes hypothesis
Sensory bias

Question 1

Competition for mates and access to fertilisation a that’s results in differential reproductive success

Answer 1

Sexual selection definition

Question 2

When it opposes natural selection:

Answer 2

Fisherian runaway selection

Chase away selection

Question 3

Natural selection favours fecundity and survival. Sexual selection favours:

Answer 3

Fertilisation a and mate acquisition

Question 4

Sexual selection has differences in route and strength to natural selection, they are:

Answer 4

Faster and consistent direction

Question 5

Does sexual selection build linkage disequilibrium?

Answer 5

More effectively yes

Question 6

Can contribute and inhibit divergence?

Answer 6

Yes both

Question 7

Provided it is ecologically divergent, sexual selection can generate what?

Answer 7

Prezygotic isolation

Question 8

Ecological interactions with sexual selection are:

Answer 8

Food resources
Parasitism
Sensory bias
Predation

Question 9

Mortality costs on sexual ornaments and affects female preference

Answer 9

Predation

Question 10

Evolution of mating system affected by environmental factors eg polygamy

Answer 10

Food resources - clumped resources results in polygamy as females choose make with the most resourceful territory

Question 11

Exploitation of host sexual signals

Answer 11

Parasitism

Question 12

Females pay attention to ecological environment to aid mate choice

Answer 12

Sensory bias

Question 13

Speciation and sexual selection are both hard to measure

Answer 13

So it is difficult to establish if sexual selection leads to speciation

Question 14

Time For Speciation

Answer 14

Time for reproductive isolation to evolve once process has started

Question 15

Biological Separation Interval

Answer 15

Average time of origin of species and when species branches again

Question 16

Reduced level of gene flow and more space to diverge from parental population results in

Answer 16

A larger area where more speciation is likely to occur. Area size effect