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Smallest human gene is that of...

Smallest human gene is that of

A

Maleness

B

Blood group

C

Thymus activity

D

Shape of nose.

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The correct Answer is:
To determine the smallest human gene from the provided options, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Options**: The options given are maleness, blood group, thymus activity, and shape of nose. We need to identify which of these corresponds to the smallest human gene. 2. **Identify the Y Chromosome**: The smallest human gene is located on the Y chromosome. The Y chromosome is one of the two sex chromosomes in humans (the other being the X chromosome). 3. **Gene Count on Y Chromosome**: The Y chromosome contains approximately 58 million base pairs and has over 200 genes. Among these, 72 genes are specifically coded for proteins. 4. **Determine the Smallest Gene**: The gene responsible for maleness is the SRY (Sex-determining Region Y) gene, which is located on the Y chromosome. This gene is crucial for male sex determination. 5. **Conclusion**: Based on the information, the smallest human gene is the one associated with maleness. ### Final Answer: The smallest human gene is that of **maleness**. ---
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