Genetic drift in a small population for multiple generations can significantly affect the composition of a population’s gene pool. Following some observation are given for reason of Genetic drift?

A) Small populations are threatened by a loss of genetic variability. This loss may be caused by inbreeding, genetic drift, and limited mating.

B) Sampling error can arise is through the founder effect, which is due to the limited matting within population

C) Genetic drift arises is through a genetic bottleneck, which develops when a population undergoes a drastic reduction in population size.

D) Variance in allele frequency due to genetic drift will be maximal when one allele is very rare and the population size is small.

Which of the above observation are true?

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#Question id: 23916

#General Aptitude

Assertion (A): Bt cotton is a transgenic crop which has been introduced in India, but is being opposed on environmental grounds. Reason (R): CrylAc protein in Bt cotton has been found to be toxic and allergenic to human beings.

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#Question id: 80

#Unit 1. Molecules and their Interaction Relevant to Biology

 Examine the Fischer projection below. How is this carbohydrate classified

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#Question id: 21254

#Unit 12. Applied Biology

Match the following plant sources with their secondary metabolites and medical uses;

SOURCES PLANT	SECONDARY          METABOLITES	USE
P. Coleus blumei	i. Atropine	a. Insecticidal
Q. Atropa belladonna	ii. Reserpine	b. Cardiac tonic
R. Trianthema portucalastrum	iii. Rosamarinic acid	c. Muscle relaxant
S. Digitalis lanata	iv. Phytoecdysones	d. Antioxidant

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#Question id: 12792

#Unit 10. Ecological Principles

Many  homeowners mow  their  lawns  during the  summer and  collect  the  clippings,  which  are  then  hauled to  the local landfill. Which of the following actions would most benefit the local ecosystem?

TLS Online TPP Program

#Question id: 12336

#Unit 10. Ecological Principles

Which of the following statements about ecology is incorrect?