answersLogoWhite

0

A genetic drift is a random change in allele frequency over time that is brought about by chances. A bottle neck is a drastic reduction in population size brought about by severe pressure.

User Avatar

Wiki User

10y ago

What else can I help you with?

Related Questions

What are the relative frequencies shown by heights called?

Bar Graph


When a population is not evolving what is it called?

When a population is not evolving, it is called being in genetic equilibrium. This means that the frequency of alleles in the population remains constant from generation to generation. Evolution requires changes in allele frequencies, so genetic equilibrium indicates no evolution is occurring.


Do humans have alleles?

It's the other way around: natural selection is the natural process that causes the frequencies of occurence of alleles in the population gene pool to shift.


The combined alleles of all the individuals in a population is what?

The entire collection of genes among a population is called the "gene pool".


Which term describes the movement of alleles into out of a population?

Gene flow


Gene frequencies in a gene pool may shift randomly and by chance This is called?

Genetic drift. It refers to the random fluctuation of gene frequencies in a population due to chance events, particularly in small populations. It can lead to the loss of genetic diversity and the fixation of certain alleles over time.


What is the process called when allele frequencies in a population of a species change over time?

Evolution; the change in allele frequencies over time in a population of organisms.


If a population of an organism shows more than two alleles for a characteristic what is that called?

codominance


What is the movement of alleles into and out of a population called?

genetic flow


What is the condition whereby a trait is determined by three or more alleles called?

The condition whereby a trait is determined by three or more alleles is called multiple allelism. Multiple alleles refer to the presence of more than two alleles of a gene within a population. This can result in various combinations of traits and phenotypes.


What are all the genes of a given population called?

Relative frequency


What are contrasting forms of genes called?

Alleles