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Okay, I need help. "If short hair (L) is dominant to long hair (l), then what fraction of the offspring produced by a cross of Llxll will be

Okay, I need help.
"If short hair (L) is dominant to long hair (l), then what fraction of the offspring produced by a cross of Llxll will be homozygous dominant?
a) 1/2
b) 1/4
c) 1/3
d) none (no change of this offspring)
The key says that it's d, but when I do the punnet square, I come out with 50% Homozygous dominant. What am I doing wrong? Or is the key incorrect?

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