Question

chromosomes are composed of ___, which are composed of ___
genomes; genes
dna; genes
dna; genomes
genes; dna

Explanation:

Chromosomes are structures within cells that carry genetic information. They are made up of genes, which are segments of DNA (deoxyribonucleic acid). DNA is the molecule that contains the genetic instructions for the development, functioning, growth, and reproduction of all known living organisms. So, chromosomes are composed of genes, and genes are composed of DNA.

Answer:

genes; DNA