A recessive gene governs trait M. If a child exhibits trait M, then:

Question

Quizplus · Accepted Answer

In order for a child to exhibit a recessive trait, they must inherit two copies of the recessive gene (one from each parent). Therefore, both parents must have the recessive gene for trait M, even if they do not exhibit the trait themselves. Choice A is incorrect because it is possible for parents to be carriers of the gene without exhibiting the trait. Choice C is also incorrect because the child would need to inherit recessive genes from both parents, not just one. Choice D is incorrect because if the trait is recessive, the child cannot have a dominant gene for it.

A Recessive Gene Governs Trait M