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Question 54 of 57

Q.Find out the wrongly matched pair.

(a) Y-chromosome - 231 genes
(b) Chromosome-1 - 2968 genes
(c) Dystrophin - 2.4 million bases
(d) Human genome - 300 bases
Puducherry TnboardTamil Nadu HSC (DGE) Board 2026MCQ· 1mImportance★★★★★
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The Human Genome Project found the human genome to contain about 3.2 billion base pairs, not 300 -- so 'Human genome - 300 bases' is the wrongly matched pair; the other three pairings are genuine HGP statistics.

The Human Genome Project (HGP), completed in the early 2000s, generated a detailed catalogue of statistics about human DNA. Among the well-known figures: the Y chromosome, the smallest human chromosome, was found to carry the fewest genes, about 231; Chromosome 1, the largest human chromosome, carries the most genes, about 2968; and the largest known human gene, dystrophin (associated with Duchenne muscular dystrophy), spans about 2.4 million bases. These three pairings are correct. However, the human genome as a whole is not 300 bases long -- it comprises roughly 3.2 billion (3,164.7 mil …

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