A group of four birds flies to a new location and starts a newcolony. Three of the birds are homozygous AA, and one bird isheterozygous Aa.A. What is the probability that the a allele will become fixed in thepopulation via genetic drift?B. If fixation of the a allele occurs, how long will it take?C. How will the growth of the population, from generation togeneration, affect the answers to parts A and B? Explain.
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.
A group of four birds flies to a new location and starts a new
colony. Three of the birds are homozygous AA, and one bird is
heterozygous Aa.
A. What is the probability that the a allele will become fixed in the
population via genetic drift?
B. If fixation of the a allele occurs, how long will it take?
C. How will the growth of the population, from generation to
generation, affect the answers to parts A and B? Explain.
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