I don't want to just be given the answers I need someone to explain to me how to get the answers so I understand (and I don't understand any of it). Thanks!
Recall that females have two X chromosomes: one from the mother and one from the father. Males have one X chromosome and one Y chromosome; the X chromosome comes from the mother, and the Y chromosome comes from the father. Traits associated with genes located on the sex chromosomes are called sex-linked traits.
The dominant allele for normal color vision is N. Individuals with the sex-linked condition called red-green color blindness do not perceive the colors red and green. Red-green color blindness is caused by the recessive allele n and is carried on the X chromosome. When an X chromosome contains the dominant allele, the allele is written as XN. When an X chromosome contains the recessive allele, the allele is written as Xn.
1.What is the genotype of a male with red-green color blindness?
2.What is the genotype of a female who is not color-blind but is a carrier of red-green color blindness?
3. Even though red-green color blindness is a recessive trait, can a female have red-green color blindness? Explain.
4. A man who is color-blind marries a woman who is not color-blind and is not a carrier of the allele for color blindness. Create a Punnett square to predict the possible genotypes of their children.
5. Will all of the female children be carriers of the color-blind allele, or will none be carriers? Explain.
6. Will all of the male children be color-blind, or will none be color-blind? Explain.
Recall that females have two X chromosomes: one from the mother and one from the father. Males have one X chromosome and one Y chromosome; the X chromosome comes from the mother, and the Y chromosome comes from the father. Traits associated with genes located on the sex chromosomes are called sex-linked traits.
The dominant allele for normal color vision is N. Individuals with the sex-linked condition called red-green color blindness do not perceive the colors red and green. Red-green color blindness is caused by the recessive allele n and is carried on the X chromosome. When an X chromosome contains the dominant allele, the allele is written as XN. When an X chromosome contains the recessive allele, the allele is written as Xn.
1.What is the genotype of a male with red-green color blindness?
2.What is the genotype of a female who is not color-blind but is a carrier of red-green color blindness?
3. Even though red-green color blindness is a recessive trait, can a female have red-green color blindness? Explain.
4. A man who is color-blind marries a woman who is not color-blind and is not a carrier of the allele for color blindness. Create a Punnett square to predict the possible genotypes of their children.
5. Will all of the female children be carriers of the color-blind allele, or will none be carriers? Explain.
6. Will all of the male children be color-blind, or will none be color-blind? Explain.