Respuesta :
Answer A. Genetic drift
genetic drift can cause decrease in general pool over the time
Answer:
Itvolves the exchange of genetic material either between multiple chromosomes or between different regions of the same chromosome.This process is generally mediated by homology; that is, homologous regions of chromosomes line up in preparation for exchange, and some degree of sequence identity is required.
Explanation:
For further information, one important instance of recombination in diploid eukaryotic organisms is the exchange of genetic information between newly duplicated chromosomes during the process of meiosis.