does the father or mother contribute the blood to the fetus?
The fetal DNA in a mother's blood can already reveal an infant's sex and other traits inherited from the father. But picking out a fetus's entire genome from its mother's is much tougher, says Dennis Lo, a chemical pathologist at the Chinese University of Hong Kong, who led the study.
Mother and baby must take first priority. Pregnant moms can not and should not donate blood because it depletes them of iron and other nutrients that are needed for the baby. It is true that pregnant women could develop anemia if they donate blood, due to the iron depletion.. Source(s): 33 weeks n 5 days preg wiv lil girl EDD 12/12.