Answer to Question #152682 in Genetics for Jayant Pensia

Question

1.Human growth is controlled by three pairs of uncoupled genes that interact in a type of polymery. The shortest people have all recessive genes and height 150 cm, the highest have all dominant genes and height 180 cm. A short woman married to a man of medium height, heterozygous for all the genes of growth. Determine the genotypes and phenotypes of children and parents.

2.Normal hearing in humans is determined by the presence of two dominant genes D and E. If the person has only one dominant gene (D-ee, ddE-) or all recessive (ddee) he is deaf. Deaf parents have seven children with normal hearing. Determine the genotypes of the parents. Determine the form of gene interaction.

Answer 1

1.Man, genotypes Hh

Man Phenotype Medium Height

Woman Genotypes hh

Woman phenotype Short

Children Genotypes HH

Children phenotype. Tall

2. Dd