21.a mother who is homozygous recessive for short eyelashes and a father who is homozygous dominant for long eyelashes have a child. what are the chances the child will have short eyelashes?

No children will have short eyelashes. Chance or probability is "0".

Explanation:

Father - dominant long - LL

Mother -recessive -short - ll

So, their children will get "L " from the father and "l ", from their mother.

Genotype of the children is Ll, and phenotype is long eyelashes.

So, no children will have short eyelashes. Chance or probability is "0".