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The genetic "defects" that can now be routinely screened out include conditions carried by a number of leading figures, such as Pete Sampras, the tennis champion, and Sergei Rachmaninoff, the Russian concert pianist and composer.
In some cases it will mean the elimination of an embryo that has been identified as carrying genetic material inherited from a stricken grandparent, but which may not necessarily develop the same illness.
The Human Fertilisation and Embryology Authority (HFEA), has published a list of 116 inherited conditions that fertility clinics can screen out without requiring special permission.
Although many of the conditions can cause gross deformity, protracted pain and premature death, the list also includes illnesses, including cancer and blindness, which can strike late in life after a victim has enjoyed decades of good health.
A number of the conditions are not life-threatening or can be readily treated because of advances in medicine.
The...