Genetic drift is a phenomenon in which there is a variation in the frequency of an allele in a population. This change occurs as certain genes get randomly selected. Sometimes, it happens that there is a small change in DNA (mutation). But this mutation has generally no effect on the fitness of an organism. Genetic drift is most common in those populations which have less number of individuals but it can occur in larger populations too.
Take an example of 100 rabbits which are existing in a population in red, brown, tan, black, white, and grey. The disease comes and 98 rabbits succumb to it. Only two are left in red and grey color. The gene resultantly has drifted from 6 alleles to only 2 alleles.
What is genetic drift? Under what circumstances do you expect genetic
Suppose you are a director of a captive breeding program for a
Why is genetic drift more probable in small populations than in large
How might immigration oppose the effects of genetic drift on genetic diversity
Antibiotics are commonly used to combat bacterial and fungal infections. During
Let’s suppose the mutation rate for converting a B allele into a
What is happening at the bottleneck? Describe the effect of genetic
A recessive lethal allele has achieved a frequency of 0.22
Why is genetic drift more significant in small populations? Why does
With regard to genetic drift, are the following statements true or
