Question

In humans, long eyelashes are dominant, short eyelashes are recessive

woman with long eyelashes and a man with long eyelashes have 4 children.

child had short eyelashes; the others have long eyelashes.


a) List the probable genotypes of the parents.


b) List the probable genotypes and phenotypes of the children.

Answer 1

a) Genotypes of parents: Aa and Aa
Phenotypes: Long eyelashes

b) Genotypes of children: AA, Aa, Aa, aa
Phenotypes: Long eyelashes, short eyelashes

(A stands for long eyelashes and a stands for shirt)

You can use a punnet square to help.