sive disorder found on the X chromosome. There can be individuals that are carriers for the trait (or the two X chromosomes they have, only one has the colorblindness allele while the other is normal. In this pattern of inheritance, all carriers are female), We express sex-linked traits with respect to our sex chromosomes. For example, if the allele for colorblindness is "b" and the allele for normal color vision is "B", then a female carrier is X x, DE II II IV What are the two sex chromosomes for 6. What are the two sex chromosomes for females? males? 7. Is the Generation I male colorblind? his sex chromosomes)?. What is his genotype (be sure to express it with regard to 8. Why are all the females in Generation Il carriers? (be careful: one of the females shown "married in" to the family) 3. The first couple in Generation Il has four children. Show the genotypes of their daughters. What is the probability their daughters will be carriers? D. If a female carrier of the color-blindness gene marries a man with normal vision, what is the probability th eir first child will be both MALE and COLORBLIND?

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Color-blindness is a recessive disorder found on the X chromosome. There can be individuals that are carriers for
the trait (Of the two X chromosomes they have, only one has the colorblindness allele while the other is normal.
In this pattern of inheritance, all carriers are female). We express sex-linked traits with respect to our sex
chromosomes. For example, if the allele for colorblindness is "b" and the allele for normal color vision is "B",
then a female carrier is X x.
II
III
IV
6. What are the two sex chromosomes for females?
What are the two sex chromosomes for
males?
7. Is the Generation I male colorblind?
his sex chromosomes)?.
What is his genotype (be sure to express it with regard to
8. Why are all the females in Generation II carriers? (be careful: one of the females shown "married in" to the
family)
9. The first couple in Generation II has four children. Show the genotypes of their daughters. What is the
probability their daughters will be carriers?
10. If a female carrier of the color-blindness gene marries a man with normal vision, what is the probability th
their first child will be both MALE and COLORBLIND?
Transcribed Image Text:Color-blindness is a recessive disorder found on the X chromosome. There can be individuals that are carriers for the trait (Of the two X chromosomes they have, only one has the colorblindness allele while the other is normal. In this pattern of inheritance, all carriers are female). We express sex-linked traits with respect to our sex chromosomes. For example, if the allele for colorblindness is "b" and the allele for normal color vision is "B", then a female carrier is X x. II III IV 6. What are the two sex chromosomes for females? What are the two sex chromosomes for males? 7. Is the Generation I male colorblind? his sex chromosomes)?. What is his genotype (be sure to express it with regard to 8. Why are all the females in Generation II carriers? (be careful: one of the females shown "married in" to the family) 9. The first couple in Generation II has four children. Show the genotypes of their daughters. What is the probability their daughters will be carriers? 10. If a female carrier of the color-blindness gene marries a man with normal vision, what is the probability th their first child will be both MALE and COLORBLIND?
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