A) Autosomal dominant gene
B) Autosomal recessive gene
C) Sex-linked dominant gene
D) Sex-linked recessive gene
Correct Answer: A
Solution :
Autosomal dominant gene. Polydactyly means having more than, i.e., the presence of supernumary digits on the hands or feet. It is the well-known abnormal hereditary trait in man. It occurs due to dominant defective autosomal gene.
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