A) A random change in gene frequencies occurring by chance fluctuations
B) A change in an allele due to alteration in the DNA molecule
C) A change in gene frequencies due to exchange of genes between different populations
D) A product of natural selection.
Correct Answer: A
Solution :
The elimination of the genes, of certain traits, from the small population when a section of the population dies of natural calamity or migrates to other region is called genetic drift. It alters the gene frequency of the population.
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