Multiple Choice
What happens to the inactivated X chromosome in female mammals when cells divide?
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13. Mendelian Genetics
X-Inactivation
Back13. Mendelian Genetics
X-Inactivation
- Multiple ChoiceTortoise shell cats have variegated coat colors caused by X-inactivation and are always what?183views
- Multiple ChoiceWhat describes X-inactivation in humans?247views
- Multiple ChoiceHow many Barr bodies would you expect to find in a cell from a person with the genotype XXY?237views
- Multiple ChoiceWhat are the three phases of X-chromosome inactivation?238views
- Multiple ChoiceWhat is a Barr body?228views
- Multiple Choice
A Barr body is:
1979views7rank1comments - Multiple Choice
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?
3471views8rank2comments - 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 __________.1379views
- Multiple ChoiceWhich of the following best describes the function of the XIST gene in X chromosome inactivation?1840views1rank