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Pedigree charts map the transfer of genetic traits through the various generations of a family. The charts resemble family trees, with tiers describing the position of individuals with families. For example, the first tier may be grandparents, the tier below may represent parents and the lower tier may represent children.
Researchers can use pedigree charts to follow the path of dominant and recessive traits through the generations to determine those affected by genetic characteristics, those who only carry the genes and those who are unaffected. One practical use of pedigree charts is in deducing whether a child may be affected if both parents are carriers of a disease.
Researchers can use pedigree charts to follow the path of dominant and recessive traits through the generations to determine those affected by genetic characteristics, those who only carry the genes and those who are unaffected. One practical use of pedigree charts is in deducing whether a child may be affected if both parents are carriers of a disease.