Which best describes the relationship between DNA, genes and chromosomes

1. DNA is segments of genes which form tight coils called chromosomes.
2. Genes are segments of DNA which form tight coils called chromosomes.
3. Chromosomes are segments of DNA which form tight coils called genes.
4. Genes are segments of chromosomes which form tight coils called DNA.

Answer: B. Genes are segments of DNA which form tight coils called chromosomes.

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