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

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.

No because the eaeht is on a 23.5 degree axis tilt and so when it is winter the northern hemisphere is pointing away from the sun and the soutubern hemisphere is pointing toward the sun

D.) domain, kingdom, phylum, class, order, family, genus then species