Homework Answers
1). Assume that the autosomal gene H codes for the Widows peak and h codes for the straight hair line and H is dominant over h. The gene gene C codes for the normal vision and the c codes for colour blindness, C is an X-linked gene and is dominant over c.
Now, the cross between a man with widow's peak and normal colour vision (Hh CY, since his father has straight hair line, he may inherited the dominant H from ihs mother) and a colour-blind women with straight hair line (hh cXcX) will have the offspring with the following genotypes.
Hh CXY* hh cXccX = Hh CXcX (1/4, widows peak, normal vision females), Hh cXY (1/4, widows peak, colour blind males), hh CXcX (1/4, straight hair line, normal vision females), hh cXY (1/4, straight hair line, colour blind males).
The probability of having a son with widows peak and colour blindness is, = 1/4.
The probability of having a daughter with widows peak = 1/4
The probability of having a daughter being homozygous for the widows peak and colour blindness alleles = 0
Probability of having a daughter with colour blindness and straight hair line = 0
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Red-green color blindness is due to an X-linked recessive allele in humans. A widow's peak (a...
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In this set of questions, you will need to be able to apply inheritance patterns of...
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inheritance patterns of two different characters/genes. One gene is
inherited in a sex-linked pattern, while the other gene is
inherited through an autosomal gene. (Answer choices include 0,
0.25, 0.5, 0.75, and 1.)
In this set of questions, you will need to be able to apply inheritance patterns of two different characters/genes. One gene is inherited in a sex-linked pattern, while the other gene is inherited through...
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2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E)...
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3. In humans Red-Green colorblindness is due to an X-linked recessive allele. A woman was diagnosed...
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In this set of questions, you will need to be able to apply
inheritance patterns of two different characters/genes. One gene is
inherited in a sex-linked pattern, while the other gene is
inherited through an autosomal gene. (Answer choices include 0,
0.25, 0.5, 0.75, and 1.)
In this set of questions, you will need to be able to apply inheritance patterns of two different characters/genes. One gene is inherited in a sex-linked pattern, while the other gene is inherited through...
Red-green color blindness is a human X-linked recessive disorder. The normal allele, XB, is dominant to the mutant allele, Xb. ill has normal color vision, but her father is color blind. Jill marries Tom, who also has normal color vision. Jill and Tom have a daughter who has Turner syndrome and is color blind How and from whom did the daughter inherit color blindness? O O O O O an ovum carrying X3 followed by fertilization by sperm from a...
2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E) is dominant to attached earlobes (e). Two parents, each with the genotype WwEe, have kids. a. What proportion of their offspring will have a widow's peak and unattached earlobes? b. What proportion will have unattached earlobes but have either a widow's peak or a straight hairline? 3. A woman with normal color vision, whose mother was colorblind, has children with a man with normal...
3. In humans Red-Green colorblindness is due to an X-linked recessive allele. A woman was diagnosed with colorblindness in her right eye, but nommal vision in her left eye. It is known that her father was colorblind and that her mother had normal vision. Explain how the phenomena of dosage compensation could explain this woman's condition.
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