A human female "carrier" who is heterozygous for the recessive, sex-linked trait causing red-green color blindness,...
A human female "carrier" who is heterozygous for the recessive, sex-linked trait causing red-green color blindness, marries a normal male. What proportion of their male offspring will have red-green color blindness? Draw a punnett square.
Homework Answers
Answer:
-
Sex-Linked inheritance:
+ = Normal Vision (Dominant)
o = Color Blindness (Recessive)Sex
Color-blind
Normal Vision
Male
XoY
X+Y
Female
XoXo
X+X+ X+Xo
Cross Between A Normal Man (XY) and
Heterozygous Woman (X+Xo)Gametes
X
Yo
X+
X+X
X+Y
Xo
XoX
XoY
Please Rate My Answer........Thank.......u...In the above cross, four different possible offspring are produced:
- XoY: Color-blind Boy (1/4 or 25%)
- X+Y: Normal Vision Boy (1/4 or 25%)
- XoX: Heterozygous carrier Normal Vision Girl (1/4 or 25%)
- X+X : Homozygous Normal Vision Girl (1/4 or 25%)
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