Washington State Magazine
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Tag: Birth defects

1 article(s) found with this tag.

To Err is Human
Fall 2008
The older a woman is when she conceives, the more likely it is her eggs will have abnormal chromosomes. But beyond the fact of the biological clock, we often overlook a bigger story. Even with young mothers, chromosome abnormalities are the single most frequent cause of miscarriage and birth defects. Between 25 and 30 percent of all fertilized human eggs have the wrong number of chromosomes, a rate that seems peculiar to humans.
Categories: Biological sciences
Tags: Genetics, Birth defects, Chromosomes