Diseases carried by recessive genes are inherited when ___________.
A)a child inherits two recessive genes,one from each parent
B)a child inherits two dominant genes,one from each parent
C)a child inherits a dominant gene from one parent and a recessive gene from the other parent
D)the child does not inherit any genes from one parent

Question

Quizplus · Accepted Answer

Diseases carried by recessive genes are only expressed when an individual inherits two copies of the recessive gene, one from each parent. This means that both parents must carry at least one copy of the recessive gene for there to be a chance of the child inheriting two copies and expressing the disease. Choice B and C do not apply because they describe the inheritance of dominant genes and not recessive genes. Choice D is not relevant to the inheritance of genetic diseases.

Diseases Carried by Recessive Genes Are Inherited When ___________