The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.

 In Darwin's tree of life, each fork in the tree represents ________.

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#Question id: 29019

#Unit 11. Evolution and Behavior

If a population of fruit flies has an initial frequency of G equal to 0.3, calculate the proportionate contribution of genotypes to population from given data;

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#Question id: 29020

#Unit 11. Evolution and Behavior

If the given proportionate contribution of genotypes to the population is  p2WFF=0.04,  2pqWFS=0.16,  q2WSS=0.16, then what will be the Relative genotypic frequency after selection:

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#Question id: 29021

#Unit 11. Evolution and Behavior

A researcher measures mandible length of 500 individuals in a bird's species, given depicted graph of these population is represents;

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#Question id: 29022

#Unit 11. Evolution and Behavior

In a given population(A) W11=W12>W22 and  Population (B) W11=W12<W22 , the natural selection will favour;

I- Population A showing directional selection against recessive allele A2, A1 fitness increases

II-Population B showing directional selection against dominant allele A1, A2 fitness increases

III- natural selection rapidly favour population A than population B

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#Question id: 29023

#Unit 11. Evolution and Behavior

Magnitude of genetic drift is dependent on two factor such as frequency of allele as well as population size, which of the following is correct?

a) decrease population size leads to increasing the magnitude of genetic drift

b) maximum magnitude are seeing whenever p=q

c) maximum magnitude are seeing whenever p>q

d) increasing population size also increasing the magnitude of genetic drift

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#Question id: 29024

#Unit 11. Evolution and Behavior

Which of the following factor does not determine the effective population size?

a- Variation between individual in reproduction success

b- Fluctuation in population size

c- non-random mating 

d- Sex ratio

e- age structure of the population