iPad? 21:45 4. Show a cross between a pure red eyed female and a white eyed male
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iPad? 21:45 4. Show a cross between a pure red eyed female and a white eyed male. What are the genotypes of the parents? How may are White eyed and male:-0--% White eyed and female: -% Red eyed and male: 50 -% Red eyed and female: 50 % 5. Show the cross of a heterozygous red eyed female and a red eyed male What are the genotypes of the parents? How may are White eyed and male: White eyed and female Red eyed and male: Red eyed and female In humans, hemophilia is a sex-linked trait. Females can be normal, have the disease, or be carriers for the trait. Males will either have the disease or not, but they won't ever be carriers. XHXH: normal female xxh: female who is a carrier xxh:female with hemophilia XHY: normal male xhY: male with hemophilia 1. Show the cross of a man who has hemophilia with a woman who is a carrier What is the probability that their children will have the disease? 2. A woman who is a carrier marries a normal man. Show the cross What is the probability that their children will have the disease? What sex will a child in the family with hemophilia be? 3. A woman who has hemophilia marries a normal man. Draw a punnett square to answer How many of their children will have hemophilia, and what is their sex?Explanation / Answer
5) Genotype of heterozygous red eyed female - XRXr.
Genotype of red eyed male - XRY.
The genotype of the parents - XRXr and XRY.
Cross between XRXr X XRY.
Gametes formed XR and Xr XR and Y.
Next generation:
White eyed and male(XrY) - 1/4 = 0.25 = 25%.
White eyed and female(XrXr) - 0%.
Red eyed and male(XRY) - 1/4 = 0.25 = 25%.
Red eyed and female(XRXR and XRXr) - 2/4 = 0.50 = 50%.
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