Biology, 07.04.2020 03:05, didraga777
Red-green color blindness is due to an X-linked recessive allele in humans. A widowâs peak (a hairline that comes to a peak in the middle of the forehead) is due to an autosomal dominant allele. Consider the following family history:
A man with a widowâs peak and normal color vision marries a color-blind woman with a straight hairline.
The manâs father had a straight hairline, as did both of the womanâs parents.
Use the family history to make predictions about the coupleâs children.
What is the chance that any daughter the couple has will be color blind with a straight hairline?
A. 0B. 1/2C. 3/4D. 1E. 1/4
Answers: 2
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Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition. b) one-fourth of the daughters of an affected man would have this condition. c) one-half of the daughters of an affected father and a carrier mother could have this condition. d) only if a woman is xxx could she have this condition.
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Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?
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Red-green color blindness is due to an X-linked recessive allele in humans. A widowâs peak (a hairli...
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