13. Mendelian Genetics
X-Inactivation
13. Mendelian Genetics
X-Inactivation
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- Multiple Choice
A Barr body is:
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In cats, fur color is determined by an X-linked gene; There are two alleles for this gene, one allele is for black fur and the other is for orange fur. In cats, a heterozygote female has calico (black and orange patches) colored fur. What kinds of offspring would you expect from the mating of a black female and an orange male?
3062views6rank2comments - Multiple ChoiceA genetic defect in humans results in the absence of sweat glands in the skin. Some men have this defect all over their bodies, but in women it is usually expressed in a peculiar way: A woman with this defect typically has small patches of skin with sweat glands and other patches without sweat glands. In women, the pattern of sweat-gland distribution can best be explained by __________.1086views
- Multiple ChoiceWhich of the following best describes the function of the XIST gene in X chromosome inactivation?1406views1rank