BIOXII05: PRINCIPLES OF INHERITANCE AND VARIATION
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If a normal man marries a girl who is carrier for colour blindness, then
1 All daughters will be colour blind
2 75% of the offspring will be colour blind
3 All sons will be colour blind
4 50% of the sons will be colour blind
Explanation:
If a normal man marries a girl who is carrier for colour blindness, then 50% of the sons will be colour blind.