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Match the terms in Group I with the ploidy in Group II.
Group I Group II P. Disome 1. 2n + 1 Q. Monosome 2. 2n –1 R. Nullisome 3. n –1 S. Trisome 4. n + 1
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- P- 4, Q-2 , R- 3 , S-1
- P- 4, Q-3 , R- 1 , S-2
- P- 2, Q-3 , R- 4 , S-1
- P- 1, Q-4 , R- 3 , S-2
Correct Option: A
Disome is a chromosome set having members paired (as in a normal somatic cell, n+1).
Monosome is a chromosome having no homologue, especially an unpaired X chromosome (2n–1, because only one copy of some specific chromosome is present instead of the usual two found in its diploid progenitor. especially an unpaired X chromosome). Nullisome is a genetic condition involving the lack of one of the normal chromosomal pairs for a species (2n–2). A trisomy is a type of polysomy in which there are three instances of a particular chromosome, instead of the normal two (2n+1).
