For the vast majority of cases, miscarriages are spontaneous and random...
There are a very few, very small percentage of the population that although are normal appearing, have some form of chromosomal abnormality (such as translocations, ring chromosomes, etc) and some of these although random when conception occured, can be hereditary..but this is a very, very small proportion of the population...
IVF with PGD is sometimes done to determine which are the normal embryos to transfer into the person..
There are a very few, very small percentage of the population that although are normal appearing, have some form of chromosomal abnormality (such as translocations, ring chromosomes, etc) and some of these although random when conception occured, can be hereditary..but this is a very, very small proportion of the population...
IVF with PGD is sometimes done to determine which are the normal embryos to transfer into the person..


January 07, 2008