Multifactorial inheritance is most likely to play a role in ?
Cleft lip
Marfan's syndrome
Down's syndrome
Erythroblastosis fetalis
Ans. is 'a' i.e., Cleft lip Disorders with multifactorial inheritance The multifactorial disorders result from the combined actions of environmental influences and two or more mutant genes having additive effects. Multifactorial disorders are ? 1. Cleft lip/cleft palate 3. Coronary hea disease 5. Diabetes melitus 7. Pyloric stenosis 2. Congenital hea diseases 4. Hypeension 6. Gout