According to textbooks, carriers of such recessive genes should not experience any disadvantage. However, we found that, as a group, they do have more medical diagnoses, and slightly fewer offspring.

For example, if Dad has a cleft chin, which is a dominant trait, he may still have a recessive gene for a smooth chin. If Dad passes on that smooth-chinned gene, and the baby also gets a ...

The most common form of color blindness is red-green color blindness. This happens when people are born without the type of ...

Thus, carriers of recessive genes for intellectual disability have reduced reproductive success and a shorter school career. Brunner: "In 1859, Darwin published On the Origin of Species by Means ...

Researchers identified that individuals with a deficiency of myeloid differentiation primary response 88 (MyD88) and interleukin-1 receptor-associated kinase 4 (IRAK-4) due to an autosomal ...