Question

Wavy hair is an example o incomplete dominance. HH is curly hair, hh is straight hair. If you cross an Hh X hh, what % will have straight hair? Cross Hh x Hh.

Answer 1

In an incomplete dominance situation for hair texture, crossing Hh with hh will result in 50% of the offspring having straight hair. When crossing Hh with Hh, there is a 25% chance that offspring will have straight hair.

Step-by-step explanation:

Incomplete Dominance in Hair Texture

Considering incomplete dominance where H represents the curly hair allele and h represents the straight hair allele, we can analyze the two genetic crosses mentioned:

The cross Hh x Hh results in the possible genotypes HH, Hh, and hh. Given that HH is curly, Hh is wavy, and hh is straight hair, the expected phenotype ratio will be 1:2:1, which means 25% will have curly hair, 50% will have wavy hair, and 25% will have straight hair.

Therefore, when crossing Hh with hh, 50% will have straight hair. And for the cross Hh x Hh, there is a 25% chance of offspring having straight hair.