Multiple choice

Chromosomes are

  1. constituent of blood which produces heat in the body.

  2. thread-like bodies that occur in the nuclei which carry the genetic code.

  3. parts of the human brain.

  4. none of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions. They are thread-like bodies that occur in the nuclei which carry the genetic code.

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