Question

Create a pedigree for the following scenario. Harold and Henrietta marry. Harold has a dimpled chin which is a dominant trait. Henrietta does not have a dimpled chin, which is a recessive trait. Label Harold and Henrietta on your pedigree. Both of Harold's parents have dimpled chins, but is sister does not. Neither of Henrietta's parents have dimpled chins. Henrietta has a brother with a dimpled chin. Harold and Henrietta have 4 children: Hester, Homer, Henry, and Hugo. None of these children have dimpled chins. From the information given, draw and label your pedigree and use it to answer the following questions.

a. What is Harold's genotype of his chin?

b. Henrietta's father suspects her brother was actually fathered by another man. What does this pedigree and Mendelian inheritance suggest about this scenario. Explain (do we need to call Jerry Springer?)

Answer 1

PEDIGREE

dd e Dimpled o dd (Hennietta) OC (Harold) 'chin Hester dd Homer dd Henry dd Hugo dd

a) Harold's genotype of his chin is Dd

b)This pedigree follows Autosomal Dominant Trait. But in the case of Henrietta brother he has Dimpled chin which in this case is impossible because none of his parents has Dimpled chin.