Relationship of genotype and degree of chimerism in coat color to sex ratios and gametogenesis in chimeric mice.
作者： R. J. Mullen , W. K. Whitten
关键词: Genotype 、 Coat 、 Gametogenesis 、 Biology 、 High incidence 、 Sex ratio 、 Genetics 、 Phenotype
摘要: Genotype and the degree of chimerism expressed in coat color chimeric (allophenic) mice were found to be related frequency multicolored chimeras, sex ratio, production gametes. The ratios 310 various combinations genotypes studied. male: female varied from 1:1 approaching 3:1. Multicolored chimeras which one genotype predominated (“unbalanced” genotypes) had normal (19 ♂ ♂, 21 ♀ ) suggesting that was determined by predominating component. neither component (“balanced” 3:1 (70 31 most (XX ⟷ XY) develop as phenotypic males. Regardless genotype, solid colored ratios. Only two hermaphrodites (0.65%) observed. A high incidence gonadal mosaics produced progeny with both parental a relatively low possible only occurred among females. A very These observations would expected if developed
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