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Question
A plant with red flowers was crossed with another plant with yellow flowers. If F1 showed all flowers orange in colour, explain the inheritance.
Solution
RR × rr
↓ ↓
R r
\ /
Rr
| R | r | |
| R | RR | Rr |
| r | Rr | rr |
I = RR (Red) 2 Rr = Orange 1 = rr yellow
It is called incomplete dominance.
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