Question

The human chromosome with the highest and least number of genes in them are respectively:

• A. Chromosome 21 and Y.
• B. Chromosome 1 and X.
• C. Chromosome 1 and Y.
• D. Chromosome X and Y.

Hint:

The human genome has 23 pairs of chromosomes, with gene distribution varying significantly across them.

Answer 1

The Correct Option is C

Step 1: Chromosome with the most genes. Chromosome 1 contains the highest number of genes, estimated at 2,000–3,000.
Step 2: Chromosome with the fewest genes. Chromosome Y has the lowest number of genes, with approximately 50–60 functional genes.