Answer :
faulty chromosomes or harmful genes cause 30% of congenital disorders.
Epigenetics is the process through which a person expresses only one copy of the gene (either from their mom or their father) while suppressing the other copy. Heart and lung abnormalities are more common in children whose mothers smoked while they were pregnant. When toddlers watch top-notch television shows, their vocabulary & social skills may increase. Hereditary or genetic factors account for 20% of birth abnormalities. Three categories can be used to categorize genetic components of birth defects: aberrant chromosomes. defective single genes. A phenomenon known as genomic imprinting determines whether or not genes are expressed based on if they were acquired from of the mother or father.
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