Q.70 Match List I with List II :
| List I | List II |
|---|---|
| (A) Adeno virus | (I) Single stranded RNA virus with 6,000 nucleotide pairs |
| (B) Polio virus | (II) Double stranded DNA virus with 35,000 nucleotide pairs |
| (C) Tobacco mosaic virus | (III) Double stranded DNA virus with 4,500 nucleotide pairs |
| (D) Polyoma virus | (IV) Single stranded RNA virus with 7,500 nucleotide pairs |
Choose the correct answer from the options given below :
- (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
- (A)-(II), (B)-(III), (C)-(I), (D)-(IV)
- (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
- (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Adenovirus is a double-stranded DNA virus with approximately 35,000 nucleotide pairs, poliovirus is a single-stranded RNA virus with about 7,500 nucleotide pairs, tobacco mosaic virus is a single-stranded RNA virus with roughly 6,000 nucleotide pairs, and polyoma virus is a double-stranded DNA virus with around 4,500 nucleotide pairs. The correct matching is option (A)-(II), (B)-(IV), (C)-(I), (D)-(III).
Virus Characteristics
Adenovirus (List I: A) matches List II: (II) as a double-stranded DNA virus (~35 kb genome), commonly causing respiratory and eye infections. Poliovirus (B) matches (IV), a single-stranded RNA virus (~7.5 kb), responsible for poliomyelitis in the Picornaviridae family. Tobacco mosaic virus (C), a plant pathogen, matches (I) with its single-stranded RNA genome (~6 kb). Polyoma virus (D) matches (III), a small double-stranded DNA virus (~4.5 kb) linked to tumors.
Option Analysis
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First option (A-II, B-IV, C-I, D-III): Correct—all pairings align with genome type and size.
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Second option (A-II, B-III, C-I, D-IV): Incorrect—poliovirus is not dsDNA (III, 4.5k); polyoma is not ssRNA (IV).
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Third option (A-III, B-I, C-II, D-IV): Incorrect—adenovirus is not small dsDNA (III); poliovirus not ssRNA 6k (I); TMV not large dsDNA (II).
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Fourth option (A-II, B-I, C-IV, D-III): Incorrect—poliovirus not ssRNA 6k (I); TMV not ssRNA 7.5k (IV).
Introduction to Virus Genome Matching
In GATE Life Sciences exams, questions like “Adenovirus polio tobacco mosaic polyoma virus match list” test virology basics, focusing on genome type (ssRNA, dsDNA) and nucleotide pairs. This detailed guide solves Q.70, verifies each virus’s characteristics, analyzes all options, and aids competitive prep for biotech students.
Detailed Virus Profiles
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Adenovirus: Non-enveloped, icosahedral dsDNA virus (~35,000 bp), infects human respiratory tract.
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Poliovirus: Picornavirus family, linear ssRNA (+ sense, ~7,500 nt), causes paralysis.
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Tobacco Mosaic Virus (TMV): Rod-shaped ssRNA (~6,000 nt), classic plant virus model.
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Polyoma Virus: Small, circular dsDNA (~4,500 bp), oncogenic in animals/humans.
Virus Genome Type Size (Nucleotide Pairs) Matches Adenovirus (A) dsDNA 35,000 (II) Polio (B) ssRNA 7,500 (IV) TMV (C) ssRNA 6,000 (I) Polyoma (D) dsDNA 4,500 (III) Correct Answer Breakdown
The right choice is first option: (A)-(II), (B)-(IV), (C)-(I), (D)-(III). This reflects standard virology data from sources like NCBI and exam solvers.
Why Other Options Fail
Second option swaps polio (ssRNA 7.5k) with polyoma sizes/types. Third misassigns adenovirus to small dsDNA. Fourth confuses RNA viruses’ sizes. Use this for GATE revision on Baltimore classification.
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