Unattached earlobes are a dominant trait. If A denotes the allele for unattached earlobes, and a denotes the allele for attached earlobes, what is (are) the possible genotype(s) of a person who has unattached earlobes? Could both parents of a person with unattached earlobes have attached earlobes? Why or why not?© BrainMass Inc. brainmass.com April 3, 2020, 6:38 pm ad1c9bdddf
First let's look at the information given. The attachement of earlobes is given as a single gene trait with two alleles in a dominant recessive ...
Punnett square analysis of a dominant/recessive di-allelic trait.