Red-green color blindness is X-linked recessive. A woman with normal color vision has a father who...
Red-green color blindness is X-linked recessive. A woman with normal color vision has a father who is colorblind. The woman has a child with a man with normal color vision. What is the probability their child is a boy and is colorblind?
A. 1/8
B. 1/4
C. 1/2
D. 3/4
E. 0
Homework Answers
Answer:
B. 1/4
Explanation:
Womans (XCXc) x (XCY) man ---Parents
|
XC |
Y |
|
|
XC |
XCXC (normal daughter) |
XCY (normal son) |
|
Xc |
XCXc (normal but carrier daughter) |
XcY (color blindness son) |
The probability their child is a boy and is colorblind = 1/4
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