Which of the following statements is an example of genetic drift?

a. Allele g for fat production increases in a small population because birds with more body fat have higher survivorship in a harsh winter.

b. Random mutation increases the frequency of allele A in one population but not in another.

c. Allele R reaches a frequency of 1.0 because individuals with genotype rr are sterile.

d. Allele m is lost when a virus kills all but a few individuals and just by chance none of the survivors possess allele m

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#Question id: 5419

#General Aptitude

The average of marks of 5 students in a class test is 6. The average of three of them is 4. What is the average of the remaining two marks?

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#Question id: 5420

#General Aptitude

In the first 15 over of a 20-20 cricket match, the run rate was 4. What should be the run rate in the remaining 5 over to reach a target of 120?

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#Question id: 5421

#General Aptitude

A car owner buys petrol at Rs.75, Rs.80 and Rs.85 per litre for three successive years. What is the average cost per litre of petrol if he spends Rs.4000 each year?

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#Question id: 5422

#General Aptitude

The average of the first 50 natural numbers is

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#Question id: 5922

#General Aptitude

The last day of a Century year can not be:

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#Question id: 5923

#General Aptitude

What day on 23/04/1990 ?