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Joe is color blind (rare trait). Both his mother and father have normal vision, but his mother's father (Joe's maternal
Posted: Mon Jul 11, 2022 2:19 pm
by answerhappygod
- Joe Is Color Blind Rare Trait Both His Mother And Father Have Normal Vision But His Mother S Father Joe S Maternal 1 (44.06 KiB) Viewed 72 times
- Joe Is Color Blind Rare Trait Both His Mother And Father Have Normal Vision But His Mother S Father Joe S Maternal 2 (43.13 KiB) Viewed 72 times
Joe is color blind (rare trait). Both his mother and father have normal vision, but his mother's father (Joe's maternal grandfather) is color blind. All Joe's other grandparents have normal color vision. Joe has three sisters-Patty, Betsy, and Lora-all with normal color vision. Joe's oldest sister, Patty, is married to a man with normal color vision; they have two children, a 9-year-old color-blind boy and a 4-year-old girl with normal color vision. The most likely mode of inheritance for color blindness in Joe's family is X- linked recessive. If Joe marries a woman who has no family history of color blindness, what is the probability that their first child will be a color-blind boy?
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