genetic drift
Genetic Drift
Genetic drift, also known as allelic drift, is the change in the number of gene variants, alleles, in a population because of random sampling. The allele frequency in a population is the fraction of the copies of one gene that share a specific form. The alleles in the offspring are a sample of gene variants in its parents. Chance plays a part in whether one survives and carries its genes on, or does not. Genetic drift may cause gene variants to disappear completely resulting in reduced genetic variation. (Genetic variation provides the genetic material for natural selection.) Few copies of an allele mean that the effect of genetic drift is larger, and when there are many copies the effect is smaller.
Non Random mating
Non-random is mating that has not occurred due to chance, and could have had human interference. It is often assumed that mating happens randomly, and that genes don’t give advantages in mating, and that any male has an equal chance of mating with any female. But there is normally competition for mates and the females normally choose the male she thinks is most fit. For example: Organisms exclusively mate with organisms that share the same genetic characteristics.
The Founder Effect
The founder effect is the loss of genetic variation which happens when a new population is established or situated by a small number of individuals from a bigger population. The new population may be considerably different from its parent population, including all of its genes and physical appearance, due to the loss of genetic variation.
The original population has nearly the same amount of blue and red individuals. The Three founder populations are mainly on or the other colour and may predominate because of random sampling of the original population.
Genetic drift, also known as allelic drift, is the change in the number of gene variants, alleles, in a population because of random sampling. The allele frequency in a population is the fraction of the copies of one gene that share a specific form. The alleles in the offspring are a sample of gene variants in its parents. Chance plays a part in whether one survives and carries its genes on, or does not. Genetic drift may cause gene variants to disappear completely resulting in reduced genetic variation. (Genetic variation provides the genetic material for natural selection.) Few copies of an allele mean that the effect of genetic drift is larger, and when there are many copies the effect is smaller.
Non Random mating
Non-random is mating that has not occurred due to chance, and could have had human interference. It is often assumed that mating happens randomly, and that genes don’t give advantages in mating, and that any male has an equal chance of mating with any female. But there is normally competition for mates and the females normally choose the male she thinks is most fit. For example: Organisms exclusively mate with organisms that share the same genetic characteristics.
The Founder Effect
The founder effect is the loss of genetic variation which happens when a new population is established or situated by a small number of individuals from a bigger population. The new population may be considerably different from its parent population, including all of its genes and physical appearance, due to the loss of genetic variation.
The original population has nearly the same amount of blue and red individuals. The Three founder populations are mainly on or the other colour and may predominate because of random sampling of the original population.