Xavier has dark curly hair and facial dimples. What type of traits are these considered?
A) recessive
B) dominant
C) polygenic
D) codominant

Question

Quizplus · Accepted Answer

Xavier's dark curly hair and facial dimples are considered dominant traits. This is because they are both common and easily observed in the population. If these traits were recessive, Xavier would need to inherit two copies of the gene for them to be expressed. If they were polygenic, they would be influenced by multiple genes. If they were codominant, both versions of the gene would be expressed in the phenotype.

Xavier Has Dark Curly Hair and Facial Dimples