Nucleic acid that is a constituent of chromosomes?

Question: Nucleic acid that is a constituent of chromosomes?

Nucleic acids are molecules that store and transmit genetic information in living cells. One type of nucleic acid that is a constituent of chromosomes is deoxyribonucleic acid, or DNA. DNA is composed of two strands of nucleotides that are twisted into a double helix. Each nucleotide consists of a sugar, a phosphate, and a nitrogenous base. The bases can be adenine (A), thymine (T), cytosine (C), or guanine (G). The order of the bases along the strand determines the sequence of genes, which encode the instructions for making proteins.

Chromosomes are structures that organize and protect DNA in the nucleus of eukaryotic cells. Each chromosome consists of a single, long molecule of DNA wrapped around proteins called histones. Humans have 23 pairs of chromosomes, which carry about 20,000 genes. During cell division, the chromosomes are duplicated and separated to ensure that each daughter cell receives a complete set of genetic information.

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