This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Complex Multigenic Disorders, Subject name: Pathology
[{'content': "Multifactorial inheritance is most likely to play a role in - \nSelect and explain. \nA. Cleft lip, B. Marfan's syndrome, C. Down's syndrome, D. Erythroblastosis fetalis", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Cleft lip Disorders with multifactorial inheritanceo The multifactorial disorders result from the combined actions of environmental influences and two or more mutant genes having additive effects,o Multifactorial disorders are -1. Cleft lip/cleft palate3. Coronary heart disease5. Diabetes melitus7. Pyloric stenosis2. Congenital heart diseases4. Hypertension6. Gout", 'role': 'assistant'}]