6. Will all of the male children be color-blind, or will none be color-blind? Explain.
Part 4: Sex-Linked Inheritance—Predicting Color Blindness in Offspring
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.
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 c and is carried on the X chromosome. The dominant allele for normal color vision is C. When an X chromosome contains the dominant allele, the allele is written as XC. When an X chromosome contains the recessive allele, the allele is written as Xc.
NEED HELP ANSWERING
Part 4: Sex-Linked Inheritance—Predicting Color Blindness in Offspring
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.
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 c and is carried on the X chromosome. The dominant allele for normal color vision is C. When an X chromosome contains the dominant allele, the allele is written as XC. When an X chromosome contains the recessive allele, the allele is written as Xc.
NEED HELP ANSWERING
1 Answer
It depends on the X chromosome only. If it is Xc they will all be color-blind. If it is XC they will all have normal color vision.
Explanation:
It is the female offspring that may have a variation, if an XcXC combination is possible. The XY combination outcome is dependent on the X trait only.
