The true statement about chromosomes is:
Chromosomes contain DNA.
This is the accurate answer because chromosomes are structures within cells that are composed of DNA and proteins, and they carry genetic information.
The other statements are false:
- The same number of chromosomes does not appear in haploid and body cells; body cells (diploid) contain two copies of each chromosome, while haploid cells (like sperm and egg cells) contain only one copy.
- Chromosomes are not found in sets of three; they come in pairs (diploid) or singly (haploid).
- DNA does not contain chromosomes; rather, chromosomes are made up of DNA.