Practice Questions

TLS Online TPP Program

#Question id: 5318

Humans have 23 pairs of chromosomes, and chimps have 24 pairs of chromosomes. What is the most likely explanation for these differences in human and chimp genomes?

#Unit 11. Evolution and Behavior

The common ancestor of humans and chimps had 24 pairs of chromosomes. During human evolution, two human chromosomes fused end to end.
In the evolution of chimps, new adaptations resulted from additional chromosomal material.
At some point in evolution, human and chimp ancestors reproduced with each other.
Errors in mitosis resulted in an additional pair of chromosomes in chimps.

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TLS Online TPP Program

#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;

TLS Online TPP Program

#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

TLS Online TPP Program

#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

TLS Online TPP Program

#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

e- age structure of the population

TLS Online TPP Program

#Question id: 29025

#Unit 11. Evolution and Behavior

In a given population of male and female will be 35 and 10. What is the effective population size (ne) for this population?

TLS Online TPP Program

#Question id: 29026

#Unit 11. Evolution and Behavior

Caused of behaviour are of two types proximate cause and ultimate cause. Given statements about these causes, which of the following is not true?