\"Suppose you travel to the future, to a time when neither cystic fibrosis nor t

Question

"Suppose you travel to the future, to a time when neither cystic fibrosis nor tuberculosis have caused any deaths for many generations. In all these future populations, the cystic fibrosis allele still exists at a low frequency"

Q: you visit a huge city with millions of people. if you were to start sampling the cystic fibrosis allele from one generation to the next, what should happen to its frequency over the next few generations and why?

a. the allele freqency should change a lot from one generation to the next due to random genetic drift

b. the allele frequency should not change much from generation to the next because the population is large

c. the allele frequency should steadily increase due to natural selection

d. the allele frequency should steadily decrease due to natural selection

Explanation / Answer

The answer is d.as the population is large so there will be less or no effect of genetic drift as it is operational in small population.the allelic frequency should be decreases as the natural selection of such alleles is very low.

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