5 Practice Question: Chromosomal Inheritance If a color blind man has a child with a “wild-type” woman, what are the chances that this daughter of theirs will be colorblind?What are the chances that their son will be colorblind?Can females be colorblind? What would the genotype of the parents have to be?
6 Human Sex Determination Textbook Story:XX = FemaleXY = MaleWith a few exceptions….
7 Occasionally, chromosomes fail to sort correctly resulting in aneuploidy (unusual numbers of chromosomes)
8 Aneuploidy can also occur with Sex Chromosomes XXY = Klinefelter Syndrome- phenotypically male with normal intelligence, sterileXO = Turner syndrome- phenotypically female, sterile, usually normal intelligenceXYY = no general traits (tall)XXX = healthy, “normal”