Question

question 12
______________________ are non essential pieces of dna.

plasmids

chromosomes

nucleus

Explanation:

To solve this, we analyze each option:

• Plasmids: Small, circular, non - essential (for basic survival in many cases) DNA molecules in bacteria, separate from chromosomal DNA.
• Chromosomes: Contain essential genetic information for the cell's function and inheritance.
• Nucleus: A cell organelle, not a piece of DNA.

So plasmids are non - essential pieces of DNA.

Answer:

A. plasmids