AIIMS 2019 Botany Human Genome MCQ Question

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.