Question

What role do DNA and chromosomes play in the expression of heritable traits in an organism?

Answer 1

a short answer would be chromosomes are dna filled. dna is what is made up in our bodies.

Step-by-step explanation:

Answer 2

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. A trait is any gene-determined characteristic and is often determined by more than one gene.