These genes are particularly prevalent among Asians.

It is a genetic condition caused by the presence of an extra chromosome.

In another, a woman with a rare genetic abnormality gets mistaken for a vampire.

A woman born with a genetic abnormality is mistaken for a vampire.

Albinism is a genetic condition that affects the production of pigment.

Finally, there are those who are born with a certain natural personality.

On Princess Royal Island, one in ten black bears is white.

A rare genetic condition has made her sensitive to sunlight.

Rhesus is a genetic feature: one is always of the same rhesus whether it is positive or negative.

Rhesus is a genetic feature: one is always of the same rhesus whether it is positive or negative.

Rhesus is a genetic feature: one is always of the same rhesus whether it is positive or negative.

The genetic uniqueness is of particular interest, since lions are regionally endangered in western Africa.

The genetic uniqueness is of particular interest, since lions are regionally endangered in western Africa.

Rhesus is a genetic feature: one is always of the same rhesus whether it is positive or negative.

The da Silva family of Brazil carries a rare genetic disorder that gives the six fingers on each hand.