D. Sex-linked In humans, hemophilia is a sex-linked trait. Females can be normal, carriers, or have the disease. Males will either have the disease or not (but they won't ever be carriers). 1. Show the cross of a man who has hemophilia with a normal woman. What is the probability Xx" that their children will have the disease? 2. A woman who is a carrier marries a hemophiliac XX man. Show the cross. What is the probability that their children will have hemophilia? What XX sex will a child in the family with hemophilia be? = female, normal = female, carrier XHY X"Y = male, normal =male, hemophiliac = female, hemophiliac 3. A woman who has hemophilia marries a normal man. How many of their children will have hemophilia, and what is their sex?

Human Biology (MindTap Course List)
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Chapter20: Chromosomes And Human Genetics
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D. Sex-linked
In humans, hemophilia is a sex-linked trait. Females can be normal, carriers, or have the disease. Males
will either have the disease or not (but they won't ever be carriers).
1. Show the cross of a man who has hemophilia
with a normal woman. What is the probability
that their children will have the disease?
H
H
= female, normal
H h
X X = female, carrier
h
xxn
XHY
X" Y
2. A woman who is a carrier marries a hemophiliac
man. Show the cross. What is the probability
that their children will have hemophilia? What
sex will a child in the family with hemophilia be?
3. A woman who has hemophilia marries a normal man. How many of their children will have
hemophilia, and what is their sex?
= female, hemophiliac
= male, normal
= male, hemophiliac
Transcribed Image Text:D. Sex-linked In humans, hemophilia is a sex-linked trait. Females can be normal, carriers, or have the disease. Males will either have the disease or not (but they won't ever be carriers). 1. Show the cross of a man who has hemophilia with a normal woman. What is the probability that their children will have the disease? H H = female, normal H h X X = female, carrier h xxn XHY X" Y 2. A woman who is a carrier marries a hemophiliac man. Show the cross. What is the probability that their children will have hemophilia? What sex will a child in the family with hemophilia be? 3. A woman who has hemophilia marries a normal man. How many of their children will have hemophilia, and what is their sex? = female, hemophiliac = male, normal = male, hemophiliac
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