Sex-linked inheritance using a Normal Grey Male (ZZ) and a Chestnut Flanked White Female (zW). In sex-linked genes, only males can be split. Females show a grey color without concealing a sex-linked gene as the males do. Offspring receive one sex chromosome from each parent. Females contribute Z's and W's, but males contribute only Z's. In the first generation, all the offspring are grey because males split for CFW, but females do not. In the second cross, the original CFW female is mated with a Zz male split for CFW, and the results are 50% Greys and 50% CFW.

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Photo credit: © Spencer Sutton / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1, bird, finch, finches, gender, gene, geneology, genetic, inheritance, pt., sex, sex-linked, trait, zebra