The we Gene is a Modifier of the walGene in Mice

The we Gene is a Modifier of the walGene in Mice Interaction of gene wellhaarig (we) with genes waved alopecia(wal) and hairless (hr) was studied in mice. The mutant gene weis responsible for the development of a specific waved coat in homozygotes. Homozygous mice carrying mutant gene walalso have a wavy coat, though a partial alopecia develops with time in these animals. In homozygotes for thehr gene, hair loss is observed beginning from the age of ten days. A series of crosses we/weand wal/wal yielded animals with we/+wal/wal and we/we wal/wal genotypes. In micewe/+wal/wal carrying gene we at a single dose, alopecia is accelerated significantly as compared to the single-dose homozygotes +/+wal/wal. In we/we wal/wal mice, alopecia starts earlier than in we/+wal/wal mice; by the age of one month, the double homozygotes are almost hairless except for small body areas covered with a sparse coat. In addition, curliness of the first-generation hair in mice we/we wal/wal is much more expressed than in +/+wal/wal and we/we+/+ mice. The obtained evidence suggests that the wegene is a modifier of the wal gene because the former enhances the effects of the walgene, which is confirmed by the earlier onset of alopecia and progression of the latter in mice having the we/+wal/wal genotype and especially in we/we wal/wal animals. The we/we hr/+ mice do not differ in coat from we/we+/+ mice; in both cases, the coat is wavy. The coat of double homozygotes we/we hr/hr, is similar to that of we/we+/+ mice until ten days of age, when the signs of alopecia appear. By the age of 21 days, mice we/we hr/hr have lost their coat completely like mice +/+ hr/hr. Hence, the we gene is a modifier of the walgene though it does not interact with hrgene during the coat formation. Russian Journal of Genetics Springer Journals

The we Gene is a Modifier of the walGene in Mice

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Kluwer Academic Publishers-Plenum Publishers
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Biomedicine; Human Genetics
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