What is the effect of genetic drift on endangered species wi

What is the effect of genetic drift on endangered species with small populations? What is the difference between allopatric and sympatric speciation? Explain the difference between stabilizing and disruptive selection.

Solution

Quees-1: What is the effect of genetic drift on endangered species with small populations

Answer:

A endangered species, which is under serious risk to extinction so that \"the effect of genetic drift\" on endangered species with small populations is going to bring genetic variation so that low level of population capability to \"undergo evolution\" in response to specific new selective pressures. Therefore, this genetic drift acts faster on endangered species with small populations and generate higher drastic results in rare and endangered species sometime contribute of \"speciation\"

Normally, heritable information is in the continuity of life completely depending on the chromosomal number without any genetic drift. Natural selection operates to select the specific genes for survival and expression in the progeny based on the reproductive ability and selection coefficient.

Founder effects can be seen in which drastic reduction of heterozygosity incase if the population become very small or near to extinction. Sometime population regains its initial numbers the average heterozygosity will be same as previous or very less for a long period.

Genetic drift is the fluctuations in allele frequencies in gametes from generation to generation that occurs by chance. The changes in allele frequencies in endangered species with small populations that cause genetic drift occur randomly and are generally unpredictable. Genetic drift changes are found to be more accelerated if the population size moves towards reduction in size or shrink.