Randip ji
"Tis true. So when cousins themselves come from a sub-population that is diverse to begin with, cousin marriage is not so big a threat to offspring. In groups where there are centuries of inter-marriage then there is more risk.
Actually genetic counseling has gone a long way to resolve some of these problems. For example, among Eastern European jews -- even without cousin marriage -- certain birth defects tend to have a high chance of occurring. Genetic counseling has reduced the incidence of problems like Tay-Sachs syndrome.
"Tis true. So when cousins themselves come from a sub-population that is diverse to begin with, cousin marriage is not so big a threat to offspring. In groups where there are centuries of inter-marriage then there is more risk.
Actually genetic counseling has gone a long way to resolve some of these problems. For example, among Eastern European jews -- even without cousin marriage -- certain birth defects tend to have a high chance of occurring. Genetic counseling has reduced the incidence of problems like Tay-Sachs syndrome.