sexual selection

_____ _____ equates to genetic selection acting via competition for mates (not resources).
Sexual Selection
1 of 18
Intrasexual selection is?
selection within the sexes.
2 of 18
intersexual selection is?
selection between the sexes.
3 of 18
True or False? Sexual selection can only exist in species with sexual reproduction?
True
4 of 18
when it comes to mate choice, who is more selective, males or females?
females
5 of 18
in order for males to communicate to females about their quality, they have to ____?
adapt morphologically to impress.
6 of 18
True or False? The advantage that certain individuals have over others is in exclusive relation to reproduction.
True.
7 of 18
Variation in reproductive success is generated by ___.
sexual selection + natural selection.
8 of 18
The heritable difference in mating success caused by competition for access to mating partners in expression of that trait, generates: ____.
variation in survival rates.
9 of 18
Differences in types of investment put into reproduction result in:
sexual selection.
10 of 18
How can males acquire females directly?
by competing with other males using display, aggression or fighting.
11 of 18
How can males acquire females indirectly?
via the acquisition and defence of a territory.
12 of 18
Name 4 ways territories can be defended?
physical presence, scent marking, scratch making and vocalisation.
13 of 18
Name the 2 ways males can advertise territory to females?
Marking and vocalisation
14 of 18
How do females select males?
on the basis of courtship displays.
15 of 18
Are courtship displays energetically costly for males?
Yes, they are long and complex.
16 of 18
Intersexual selection results from:
indicator mechanisms (secondary sexual characteristics) and resultant mate choice.
17 of 18
Explain the Fishers runaway effect?
Genetic, sexual selection mechanisms for the evolution of exaggerated male ornamentation observed in numerous species which produce offspring through sexual reproduction; based upon female choice,the preference or attraction of females for male mate
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Other cards in this set

Card 2

Front

Intrasexual selection is?

Back

selection within the sexes.

Card 3

Front

intersexual selection is?

Back

Preview of the front of card 3

Card 4

Front

True or False? Sexual selection can only exist in species with sexual reproduction?

Back

Preview of the front of card 4

Card 5

Front

when it comes to mate choice, who is more selective, males or females?

Back

Preview of the front of card 5
View more cards

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