Here's why:

* Chromosome: A long, thread-like structure of DNA and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.

* Nucleus: The control center of the cell, containing the chromosomes.

* DNA: Deoxyribonucleic acid, a molecule that carries genetic instructions.

* Nucleotide: The basic building block of DNA, consisting of a sugar, a phosphate group, and a nitrogenous base.

Analogy Explanation:

Just like chromosomes are found within the nucleus, DNA is found within nucleotides. DNA is essentially a long chain of nucleotides linked together.