Question

QUESTION 28 Organisms with sexual reproduction might be expected to have an advantage over closely related asexual organisms when... (choose all that apply) The environment is very stable The environment is fluctuating unpredictably Parasites are present in the population. The ecosystem is lacking in major predators. The weather patterns are very unpredictable The weather patterns are very predictable.

QUESTION 30

A female peacock is checking out the potential mates - males with excellent plumage displays. When she sees a male with vibrant colors, shiny feathers, and a confident stride these are likely examples of what?

		Aposematic coloration
		'Honest' signaling
		Batesian mimicry
		Muller's ratchet

Answer 1

Ans 28:

Fluctuations in environmental conditions or parasite outbreak will harm asexually reproducing organisms more than those reproducing sexually. This is because asexual reproduction creates genetically identical clones , whereas sexual reproduction leads to variations and organisms are better adapted to changing conditions.

Option B,c,e should be correct.

(B) The environment is fluctuating unpredictably . (C) Parasites are present in the population. (E) The weather patterns are very unpredictable.

Ans 30:

Peacock tail show is an example of "honest signalling" as male peacocks cannot fake the size of feathers and hence can give only honest signal.

honest signalling