The true statement about chromosomes is: Chromosomes contain DNA.
This statement accurately reflects the relationship between chromosomes and DNA, as chromosomes are structures made up of DNA and proteins, which help organize and package the DNA in a compact form within the cell.
The other statements are incorrect:
- Chromosomes are typically found in sets (diploid) in body (somatic) cells, but haploid cells (gametes) have half the number of chromosomes.
- DNA does not contain chromosomes; rather, chromosomes are made of DNA.
- Haploid and body (diploid) cells have different numbers of chromosomes.