AP BIOLOGY

Detailed explanation-1: -Each parent provides one of these genes to the child. So, if both the parents have dimples, the children have 50-100% chances of inheriting dimple genes. If, however, only one parent has dimple genes, the chances of the children inheriting the genes are 50%.

Detailed explanation-2: -Dimples are a human trait that are highly heritable, that is, if your parents had them, that means you likely have them. Dimples are the dominant trait, meaning if one parent has them and the other do not, it’s likely their child will have them.

Detailed explanation-3: -One allele for the gene that codes for cheek dimples is given the symbol “D”. The other allele that codes for no dimples is given the symbol “d”. A person that has cheek dimples will have a genotype of either DD (homozygous) or Dd (heterozygous).

Detailed explanation-4: -Since dimples are a dominant trait, only one parent needs to have them. If you or your partner has dimples, there is an over 50% chance your baby will have them. Interestingly enough, he might not even have them but still carry the gene onto his own offspring.

Detailed explanation-5: -Because dimples is an autosomal dominant trait, heterozygosity will express dimples, leading to a 50% chance that the child will have dimples.