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allele frequencies
allele frequencies
The Hardy-Weinberg principle posits that in the absence of outside evolutionary forces, a population's alleles and genotype frequencies will remain constant. Biologists use this principle as the standard against which to test outside evolutionary forces on a population.
allele frequencies
Genetic equilibrium is a theoretical concept used to study the dymamics of single alleles in the population gene pool. In practice, there is no situation in which allele frequencies do not drift to some degree. Large populations may slow drift down, but there will still be drift.
BottleneckThat is a condition of the Hardy-Weinberg law and the population is said to be in Hardy-Weinberg equilibrium , but it is an idealization that never happens in nature.
That situation is called a Hardy-Weinberg equilibrium. Not actually seen outside of the lab.
Extrinsic factors are outside influences.
The outside factors have varied effects on the excretory system. If the external factors are not conducive, homoeostasis will not be achieved by the excretory system and the body may have a build up of toxic wastes.
When an organism is in Hardy-Weinberg equilibrium there is no evolution. There is no mutation, mating is random and thus no natural selection. Naturally, outside of labs this condition is never seen.
Heat stroke
about 40-60% depending on outside factors