Gene Distribution Across Chromosomes — NEET Biology
📚 Practice ConceptChromosome 1 has most genes (2968), and the Y has the fewest (231).
Match the following genomic features with their associated values/properties: Column I (a) Total human genome base pairs (b) Estimated total number of genes (c) Portion of genome coding for proteins (d) Chromosome with highest gene count (e) Chromosome with lowest gene count Column II (i) < 2 per cent (ii) Chromosome 1 (iii) 3164.7 million bp (iv) 231 (v) 20,000–25,000
View solution & NCERT explanation
Correct answer: A — (a)-(iii), (b)-(v), (c)-(i), (d)-(ii), (e)-(iv)
This question tests knowledge of the salient features of the human genome as revealed by the Human Genome Project. Let's match the items: (a) Total human genome base pairs: The human genome contains 3164.7 million bp. So, (a)-(iii). (b) Estimated total number of genes: The total number of genes is estimated at 20,000–25,000. So, (b)-(v). (c) Portion of genome coding for proteins: Less than 2 per cent of the genome codes for proteins. So, (c)-(i). (d) Chromosome with highest gene count: Chromosome 1 has the most genes (2968). So, (d)-(ii). (e) Chromosome with lowest gene count: The Y chromosome has the fewest genes (231). So, (e)-(iv). Therefore, the correct match is (a)-(iii), (b)-(v), (c)-(i), (d)-(ii), (e)-(iv).
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