27) a) We considered the quest

27) a) We considered the question of whether predators controlpopulation numbers of their prey or not. Briefly describe (1sentence) two situations in which predators wouldnot be the primary factor regulating numbers oftheir prey in ecological time (2.5 points each).

b) Name or briefly describe one of the 5 typesof natural selection that we studied. For the type of selectionthat you identify, briefly explain (a word, a few words, or a briefsentence) whether or not the mean of the trait we are studying(e.g., bill length) is shifted in the population due to this typeof selection, and how variation of this trait is affected in thepopulation as a whole due to this type of selection. For some typesof natural selection, you may need to clarify whether you arediscussing short term or long term effects.


Yes predators control population number of their prey.

Two situation in which predators would not primary factorare-

The predators population increases and prey population growthdecreases. Vice versa.

The prey population relies on the predator population to keeptheir community in control and predators rely the prey in theirfood source.

Types of natural selection

Directional selection

Stabilizing selection

Disruptive or diversifying selection

Kin selection

Sexual selection

This trait very fast directional selection from the shape of theapproximate it’s either right or left by varriying degrees it hasmore one direction or the other, they colouring favoured mimic.

Disruptive selection skew when individual are plotted on agraph.

Stabilizing selection skew bell curved that select skin colourlight skin or darked this is usually caused by incomplete orcodominance

Sexual selection skew phenotype ratio choose makes of grouptrait, fitness of males judge on the basis of attractiveness willreproduce more progeny.

Kin selection are choosing to mimics natural natural decidingwhich trait are favourable or not human selects more beneficial.Galapagos island which had unique beak shaped.

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