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Pseudolinkage : ウィキペディア英語版 | Pseudolinkage
In genetics, pseudolinkage is a characteristic of a heterozygote for a reciprocal translocation, in which genes located near the translocation breakpoint behave as if they are linked even though they originated on (nonhomologous chromosomes ). Linkage is the proximity of two or more markers on a chromosome; the closer together the markers are, the lower the probability that they will be separated by recombination. Genes are said to be linked when the frequency of parental type progeny exceeds that of recombinant progeny. == Not occur in translocation homozygote ==
During meiosis in a translocation homozygote, chromosomes segregate normally according to Mendelian principles. Even though the genes have been rearranged during crossover, both haploid sets of chromosomes in the individual have the same rearrangement. As a result, all chromosomes will find a single partner with which to pair at meiosis, and there will be no deleterious consequences for the progeny.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pseudolinkage」の詳細全文を読む
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