Consider bats, where the folded ear allele (e) is recessive to the upright ear allele (E). If, in a colony of 100 bats, 64 of the bats have upright ears (assuming the colony is at Hardy-Weinberg equilibrium) how many do you expect to be: a) Homozygous Dominant? b) Homozygous Recessive
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.
Consider bats, where the folded ear allele (e) is recessive to the upright ear allele (E). If, in a colony of 100 bats, 64 of the bats have upright ears (assuming the colony is at Hardy-Weinberg equilibrium) how many do you expect to be:
a) Homozygous Dominant?
b) Homozygous Recessive?
c) Heterozygous?
According to Hardy weinberg principle
p2+q2+2pq= 1
p+q=1 where
p = frequency of the dominant allele in the population
q = frequency of the recessive allele in the population
p2 = percentage of homozygous dominant individuals
q2 = percentage of homozygous recessive individuals
2pq = percentage of heterozygous individuals
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