Human cells carry 23 pairs of chromosomes, including one pair which determine gender Men may not become extinct after all, according to a new study. Previous research has suggested the Y sex ...

A chromosome disorder occurs when there is a change in the number or structure of chromosomes. In each cell, DNA is packaged into thread-like structures called chromosomes. Humans have 46 chromosomes, ...

A toddler has a chromosome disorder that is so rare she is thought to be the only sufferer in the world. Nyara Bone's mother Heather Smith, 30, claims she was told she was being an 'over-reactive ...

Children generally look a little like their mother and their father, but are not identical to either. They inherit their features from each parent's DNA. Examples of genetic variation in humans ...