1.   A clear example of a mutation altering development is the inherited genetic defect, sickle cell anaemia.

2.   According to one school of thought, the disease is caused by a genetic defect.

3.   Cancer, genetic defects and accelerated ageing can be caused by exposure to low level radiation.

4.   The condition is caused by a genetic defect.

5.   The finding could ultimately lead to a way to correct the genetic defect, scientists say.

6.   The pair announced that they had identified a genetic defect in the dopamine system of some alcoholics.

7.   Andrews argues that fixing a genetic defect that causes a catastrophic disease and passing that correction to new generations would be a benefit, not a risk.

8.   Do they want a notation describing a genetic defect added to their permanent medical records?