We have used a small population (52) of consistent and known age structure, with only four possible genetic states (four alleles of one gene). What does this exercise suggest to you about the effects of a bottleneck in populations involving hundreds of genes and alleles, some of which may be very rare (
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
We have used a small population (52) of consistent and known age structure, with only four possible genetic states (four alleles of one gene). What does this exercise suggest to you about the effects of a bottleneck in populations involving hundreds of genes and alleles, some of which may be very rare (frequency 0.01 or less)? In other words, what are the limitations of this model compared to real populations?
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