Let’s say that a population has N individuals (2N alleles) in generation t. It suddenly undergoes...

Let’s say that a population has N individuals (2N alleles) in generation t. It suddenly undergoes a population expansion such that the t+1 generation has 100N individuals (i.e.200N alleles). How does this change the effective population size? What does this mean for the amount of drift in this new population?

Expert Solution

Ans) The size of ideal population that maintain as much as genetic variations or experiences as much genetic drift as an actual population regardless of census size.

The population expansion is 100 times in N+t generation than the previous generation. This type of population growth is overpopulation. The survival nature or existance of this type of population ainly depends on the availability of natural resource like area, nutrients, and water.

If the avaiability of resources is plentiful then positive growth will be observed as the number of offspring will incerease and the mortality rate will be low. This type of growth is called postive feedback But if the resource is less then there will be competition between the the species for the survival. In this case negative feedback will be observed as mortality rate will incerease.

The effective population size will show the same amount of dispersion of allelic frequency under random genetic drift.

gladiator answered 1 year ago

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