or ‘salty liquorice,’ the cats have hair strands that start out black, and become white the further they grow from the follicle. It turns out the unique color is caused by a recessive genetic ...

Albinism is a condition some people are born with where their bodies make little or no melanin, which can present some unique ...

Dr. Morton responds: When the Plain people, which include the Amish and Mennonite, came to Lancaster County from Europe about 300 years ago, they carried a set of recessive gene mutations that are ...

Therefore, females with an X chromosome-linked recessive disease inherit one copy of the mutant gene from an affected father and the second copy of the mutant gene from their mother, who is most ...

However, half the possible offspring will be homozygous, FF, and be unaffected, and half will be heterozygous, Ff and carry the recessive allele. The ratio of FF to Ff is 1:1 or 50%. This genetic ...