Class 10 Science Biology Heredity and Evolution
How many genotypes are possible from a cross between the parent and ?
(a)
Four
(b)
One
(c)
Three
(d)
Two
Correct answer: (b) 
Solution: 
Crossing between RR and rr will give one genotype that is Rr.
So, the correct option is B.

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components of food
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heredity and evolution
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