Chromosomes are structures within the nucleus made up of DNA molecules coiled around proteins called histones.
Genes are segments of DNA that contain instructions for making specific proteins or RNA molecules.
The nucleus is the control center of the cell, containing genetic material (DNA) that determines an organism's characteristics.
The structure of DNA consists of two strands twisted together into a double helix shape held together by hydrogen bonds between complementary base pairs (A-T and C-G).
