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Multiple alleles


multiple alleles
one of three or more alternative forms of allelic series that all map to a specific locus
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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Multiple alleles
Many genes have more than two alleles (even though any one diploid individual can only have at most two alleles for any gene), such as the ABO blood groups in humans, which are an example of multiple alleles.
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multiple alleles: a condition in which more than two alleles exist for a characteristic; one example is A, B, AB, and O blood types.
muscle contraction: a process in which actin and myosin proteins move within a sarcomere.
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multiple alleles A condition in which more than two alleles exist for a given trait.
multiple fission Asexual reproduction by the splitting of a cell or organism into many cells or organisms. See schizogony.
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Codominance and Multiple Alleles- Example: ABO blood group
Up to this point, we have discussed two possible alleles for any gene locus. For example, at the flower color locus, there is either the red or the white allele (A or a).
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Multiple alleles at a locus differed in sequence, but their fitnesses were the same. Kimura's neutral theory described rates of evolution and levels of polymorphism solely in terms of mutation and genetic drift.
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The S loci are (as in SSI plants) extremely polymorphic; that is, there is an abundance of multiple alleles in the population.
Incompatibility is controlled by the single S allele in the haploid pollen grain.
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Extended expression patterns seen in diploid organisms include facets of incomplete dominance, codominance, and multiple alleles .
See also : genetics, skill
Categories: Classical genetics ...
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