Practice Questions

TLS Online TPP Program

#Question id: 13170

Which of the following events might you predict to occur if the tilt of Earth's axis relative to its plane of orbit was increased 33.5 degrees?

#Unit 10. Ecological Principles

Summers and winters in the United States would likely become warmer and colder, respectively.
Winters and summers in Australia would likely become less distinct seasons.
Seasonal variation at the equator might decrease.
Both northern and southern hemispheres would experience summer and winter at the same time.

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TLS Online TPP Program

#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;

TLS Online TPP Program

#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:

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