Human insulin molecule is composed of one a-chain having 21 amino acids and one P-chain having 30 amino acids. How many functional insulin genes occur in adult humans?

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Q: 8 (CDS-II/2017)
Human insulin molecule is composed of one a-chain having 21 amino acids and one P-chain having 30 amino acids. How many functional insulin genes occur in adult humans?

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,7,16,9,7,6,1

keywords: 

{'many functional insulin genes': [0, 0, 0, 1], 'human insulin molecule': [0, 0, 0, 1], 'amino acids': [1, 0, 0, 0], 'chain': [0, 0, 0, 3], 'adult humans': [0, 0, 0, 1]}

The human insulin molecule consists of two chains, the A-chain and the B-chain. The A-chain is made up of 21 amino acids, while the B-chain is made up of 30 amino acids. These two chains are held together by disulfide bonds to form the complete insulin molecule.

In the human body, the production of insulin is controlled by the insulin gene, which is located on chromosome 11. The insulin gene contains the genetic information for the production of insulin.

Based on the information provided, we can conclude that there are two functional insulin genes in adult humans. These two genes are responsible for the production of the A-chain and the B-chain, which then combine to form the functional insulin molecule.

Thus, the correct answer to the question is option-2, which states that there are two functional insulin genes in adult humans.