33. A gene was located on 10p11. This means the gene was located on the
(1) short arm of chromosome 10 at G-sub band 1 of band 1
(2) short arm of chromosome 10 at G-band 11
(3) short arm of chromosome 10 much away from the centromere
(4) long arm of chromosome 10 at G-sub band 1 of band 1
Option Analysis
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Option (1): This accurately describes the notation “10p11.” The “10” indicates chromosome 10, “p” denotes the short (petite) arm, “1” is the first band from the centromere, and the second “1” specifies the first sub-band within that band, observed via G-banding techniques.
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Option (2): Incorrect, as “10p11” does not refer to G-band 11; bands are numbered sequentially from the centromere, so “11” would imply an 11th band, not matching the structure.
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Option (3): Wrong, because “10p11” precisely locates the gene near the centromere on the p arm (band 1 is proximal), not “much away” which would suggest distal regions like higher band numbers.
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Option (4): Invalid, since “p” always means the short arm, not the long arm (denoted “q”).
Chromosome notation like gene located on 10p11 chromosome notation helps map genes precisely using G-banding, where “10” specifies chromosome 10, “p” the short arm, and “11” the first band and sub-band near the centromere. This system, vital for CSIR NET Life Sciences, reveals how genes on chromosome 10p11 influence traits or disorders via standardized banding patterns from centromere outward. Mastering gene located on 10p11 chromosome notation aids in genetic mapping and exam success.
