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Positive assortative mating
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∙ 13y ago
Gene flow that involves the movement of individuals from a high-variation population into a low-variation population can result in a reduction of genetic variation. This can happen if the incoming individuals do not introduce new alleles or if genetic drift and selection reduce the frequency of existing alleles.
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What are the four forces of human evolution?
The four forces of human evolution are mutation, genetic drift, gene flow, and natural selection. Mutation introduces new genetic variations, genetic drift refers to random changes in gene frequencies within a population, gene flow involves the transfer of genetic material between populations, and natural selection is the process by which certain traits become more common in a population due to their advantage for survival and reproduction.
A mutation in what results in lactose tolerance?
A mutation in the LCT gene, which is responsible for producing the lactase enzyme, results in lactose tolerance. This mutation allows individuals to continue producing lactase into adulthood, enabling them to digest lactose, the sugar found in dairy products.
What is multiregional?
Multiregional refers to a theory of human evolution that suggests modern humans evolved from different populations in multiple regions of the world, rather than from a single population in Africa. This theory proposes that regional populations gradually evolved into modern humans independently, with gene flow occurring between these populations over time.
How come does everyone look different when you have same origin?
Genetic variation plays a major role in determining an individual's physical appearance, even among people with the same ethnic or cultural background. Factors such as variations in gene expression, environmental influences, and random genetic mutations can all contribute to the diversity of appearances within a population. Additionally, personal experiences and lifestyle choices can further shape an individual's overall appearance.
What do many scientists believe may have happened after Homo sapiens sapiens came into contact with Neanderthals?
Many scientists believe that Homo sapiens sapiens interbred with Neanderthals, leading to gene flow between the two species. This interbreeding is thought to have contributed to the genetic diversity of modern humans, with some populations outside of Africa retaining Neanderthal DNA in their genomes.
What is inhereited variation with recombination and gene flow?
What is inertied variation with recombination .
Can you list Two sources of variation?
Mutations, recombination, gene flow.
What is one of the main causes of speciation?
geographic isolation and the reduction of gene flow
What kind of variation must exist in a population that has a wide range of phenotypes?
Gene Flow
What kind of variation must exist in population that has a wide range of phenotype?
Gene Flow
What is variation in evolution?
A variation of a gene is called and allele. Different alleles are caused by mutations.
How does reducing gene flow cause speculation?
It allows divergence to occur
Which term describes the movement of alleles into out of a population?
Gene flow
What is the movement of alleles into and out of a population called?
genetic flow
When members of one population move into an area where a population of the same species is present?
Gene flow tashana williams fostoria Ohio
What is a different between allele and gene?
an allele is a gene that is the cause of hereditary variation
What is the movement of gene into and out of a gene pool called?
gene flow
