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No...small populations have less genetic diversity. Explained by random genetic drift from neutral theory, the smaller the population, the faster it will fix on a certain allele, that is, a less genetic diversity.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoSmall populations increase the likelihood of inbreeding. Inbreeding negatively affects the genetics of something by causing recessive genes (physical attributes that are no-longer or are rarely present in offspring) to become more and more dominant. Also, because the same genes are being used in a population, there is no genetic advancement cause by the presence of new or different genetics.
Wiki User
∙ 12y agoPopulations which are smaller experience more genetic drift. This is because they probability of sudden frequency changes in the genes would be greater in small populations.
Eg consider a small population of red beetles where a variation exists i.e a very few beetles which are blue.
Now for namesake consider that a large elephant comes by and stamps the beetles which incidently are all red(which was first in majority). Thus an unexpected accident caused a major change in frequency of genes.
had this been in a very large population then there is a probability that a few red beetles may have survived etc.
Wiki User
∙ 6y agoNo, it is more likely to occur in smaller populations.
Wiki User
∙ 7y agoThey have a greater frequency of harmful genes.
Wiki User
∙ 12y agoTrue, as is opposite.
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Does genetic drift occur in small or large populations?
Small populations.
Do the allelic frequency of a gene does not change when it is genetic equilibrium?
trueAllele frequencies always drift to some degree. The rate of drift may be slower in large populations, but it is never zero.
Which factor would most likely disrupt genetic equilibrium in a large population?
Genetic Drift
How does genetic drift work?
Genetic drift is the term used for random evolutionary developments that have equal "survival-value" with respect to natural selection. Natural selection defines broad parameters for what kind of traits organisms existing in a certain environment should ideally have, but within these parameters there is a lot of room for random drift.
Genetic drift is more likely to occur in large population true or false?
false... its likely to occur in small population
Does genetic drift occur in small or large populations?
Small populations.
Why is large population size important in maintaining genetic equilibrium?
Genetic drift has less effect on large populations.
When are two populations likely to have very similar allele frequencies?
If there is a large amount of genetic drift :)
What kinds of populations are affected by genetic drift?
Genetic drift occurs in all finite populations. However the effects of drift are more pronounced in smaller populations than in large ones. Meanwhile, even though they are more present in smaller populations, the drifting is more likely to occur in larger populations because of the larger number of different genetic combinations present. Throughout evolution of populations, genetic drifting effects all types of population sizes, though it is more likely in larger populations but more present in smaller populations.
What statistical rule does genetic drift follow in small and large populations?
While genetic drift is random to some extent; it does follow certain statistical rules. The time it takes for an allele to become fixed is shorter in a small population than in a large one.
How does population size affect the likelihood of changes in allele frequencies by chance alone?
Mutation rates are small but constant. With a typical mutation rate of 1 x 10-6, it is expected that 1 out of a million individuals in a population will carry the mutation. If the population size is small (10,000 or fewer individuals), the probability that the mutation will be present is small (~1% with 104 individuals). If population sizes are large (107 or more individuals), the probability that the mutation will be present is large (~10 mutants expected if 107 individuals are in the population). Mutations can be lost from populations through genetic drift, and large populations experience less genetic drift than small populations. Thus mutations are more likely to exist and persist in large populations than in small populations.
Do the allelic frequency of a gene does not change when it is genetic equilibrium?
trueAllele frequencies always drift to some degree. The rate of drift may be slower in large populations, but it is never zero.
Which population is a subject to genetic drift?
A large population..
Which factor would most likely disrupt genetic equilibrium in a large population?
Genetic Drift
What is genetic drift and how does it affect the evolution of a species?
All events that result in changes in allele frequencies in populations contribute to evolution. Genetic drift likewise. Genetic drift is no different from all other reproductive variation, save that the term refers to changes that are more or less neutral.
What is a genetic drift and when does it occur?
Genetic drift is the spread of specific random variations throughout the gene pool in the absence of specific selection pressures. There's always random variation in the population, but there aren't always changes in the environment for the population to adapt to. So natural selection, in stead of moving the population towards adaptation, might select from that random variation to move 'sideways', as it were, to a state that's equally well-adapted to the environment as what came before, but different. As random variation may produce many variants that are, more or less, equally well-adapted to their environment, the direction of evolution that results is more or less random. Because variations may spread throughout small populations faster than throughout large populations, and because a large gene pool has a stabilizing effect on the spread of variations, small populations drift faster than large populations.
What size populations does genetic drift occur most rapidly in?
Genetic drift is the spread of specific random variations throughout the gene pool in the absence of specific selection pressures. There's always random variation in the population, but there aren't always changes in the environment for the population to adapt to. So natural selection, in stead of moving the population towards adaptation, might select from that random variation to move 'sideways', as it were, to a state that's equally well-adapted to the environment as what came before, but different. As random variation may produce many variants that are, more or less, equally well-adapted to their environment, the direction of evolution that results is more or less random. Because variations may spread throughout small populations faster than throughout large populations, and because a large gene pool has a stabilizing effect on the spread of variations, small populations drift faster than large populations.
