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NDA 2024 · PYQ · Cell Biology / Prokaryotes · easy

In most prokaryotes, the chromosome number is:

Answer

The correct answer is D: 1. Most prokaryotes (bacteria and archaea) possess a single, circular chromosome located in the nucleoid region of the cell. Unlike eukaryotes, they do not have multiple linear chromosomes packaged with histones inside a true nucleus.

  1. A.4
  2. B.3
  3. C.2
  4. D.1✓ Correct

Explanation

Most prokaryotes (bacteria and archaea) possess a single, circular chromosome located in the nucleoid region of the cell. Unlike eukaryotes, they do not have multiple linear chromosomes packaged with histones inside a true nucleus. Although they may carry additional small DNA molecules called plasmids, these are not considered chromosomes. Therefore, the chromosome number in most prokaryotes is 1.
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