What is DNA? Chromosomes and their genes are made of a molecule called DNA. DNA molecules carry the code that controls what your cells are made of and.
Genetics Unit Genetic Materials Terms to know: - DNA- genome - RNA- double helix - Chromosome- karyotype - Chromatin - Sister chromatid - Gene - Bases.
Biology 9.2 Structure of DNA DNA’s Structure. DNA’s winding staircase By the early 1950s, most scientists were convinced that genes were made of DNA.
