Please answer the question carefully A child is born with at

Please answer the question carefully.

A child is born with attached ear lobes. His parents have free ear lobes. What is the genotype of all persons mentioned?

Solution

Ear lobes ( E ,e ): It has illustrated that “homozygous recessive (ee) individuals possess attached ear lobes” whereas “heterozygous (Ee) or homozygous dominant (EE) individual possess “free ear lobes”. Therefore, “a child” who is born with attached ear lobes will have the following genotypes. His parents have free ear lobes means they have heterozygous (Ee) dominant individuals

                                        Ee                     x                 Ee (heterozygous (Ee) dominant parent individuals)

                       E                        e             x           E                e    (gametes)

                         EE                 Ee               Ee                \"ee\" (a child with homozygous recessive (ee) individuals possess attached ear lobes)