Fixed allele

The rabbit population after the brown allele becomes fixed.

This image shows how though successive generations random allele fluctuations, or genetic drift, can lead to the fixation or loss of certain alleles within a population.

A fixed allele is an allele that is the only variant that exists for that gene in all the population. A fixed allele is homozygous for all members of the population. The term allele normally refers to one variant gene out of several possible for a particular locus in the DNA. When all but one allele go extinct and only one remains, that allele is said to be fixed.

单词	Fixed allele
释义	Fixed allele 英语百科 Fixed allele A fixed allele is an allele that is the only variant that exists for that gene in all the population. A fixed allele is homozygous for all members of the population. The term allele normally refers to one variant gene out of several possible for a particular locus in the DNA. When all but one allele go extinct and only one remains, that allele is said to be fixed.
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