AIIMS 2019 Botany Human Genome MCQ Question
Select the wrong statement:
The human genome contains 3164.7 million nucleotide bases
Less than 10% of the genome codes for protein
Repeated sequences make up very large portion of the human genome
Chromosome 1 has most genes (2968) and Y has the fewest (231)
Correct Answer
Detailed Explanation
Option B is incorrect because, while it is true that less than 2% of the human genome directly codes for proteins, the statement implies that this percentage is significantly lower than it actually is. In fact, approximately 20,000-25,000 protein-coding genes exist within the human genome, which constitutes a small but not negligible portion. Options A and C are accurate: the human genome indeed contains about 3.2 billion nucleotide bases (3164.7 million), and a substantial portion of the genome consists of repeated sequences, such as transposable elements and satellite DNA, which play roles in genome structure and regulation.
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