To isolate a gene involved in a recessive condition like hearing loss, scientists need access to large extended families with at least 10 affected people.

Knowing that cousin marriages increase the probability of recessive genetic conditions, she is understandably against the practice.

As a recessive genetic condition, both parents must carry the asymptomatic gene and pass it along to their child, a chance of roughly 25 percent.

Carpenter syndrome is usually inherited as an autosomal recessive condition.

But the layer of the sun that caused them had gone into "recessive condition."

JS is an autosomal recessive condition with an estimated prevalence of 1: 100,000.

It is an autosomal recessive condition that more often affects males.

The term "carrier", by definition, applies only to recessive conditions.

The gene frequency for this autosomal recessive condition was estimated at 1 in 218.

Because it is an X-linked recessive condition, the disease develops only in boys, while girls are carriers.