Ethnomedicine refers to the study of intercultural health systems aimed at eliminating or treating disease. Ethnomedicine, studies the medicine of a culture involved with the ethnic traits of that region, that is, this science seeks to study medical practices of a culture used to treat a disease, even if these medical practices involve mysticism, the use of nature, the use of religious beliefs and rituals of primitive or indigenous people.
Unless you talking about the ways to figure out the genes of the child could get. Like a punnet square, based if the alleles the parents have, people can figure out what alleles the child COULD have.