The analysis revealed that about 2 per cent of sperm from men in their early 30s contained disease-causing mutations. That figure rose to between 3 and 5 per cent in middle-aged men (43 to 58 years) ...
Dog cloning has moved from science fiction into a niche but growing service that promises a genetic twin of a much loved pet.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results