If short hair (L) is dominant to long hair (l), then what fraction of the offspring produced by a cross of Ll x ll will have long hair

The answer is 50%.

Explanation:

If we cross the two genotypes given in the question as Ll and ll, we can see that 50% of the offspring will have Ll as the genotype and the other 50% will have ll as the genotype.

Since L is the dominant gene, all the Ll genotypes will have long hair as a result of the dominant gene.

I hope this answer helps.

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