human chromosomes - isometric view 3d

nitrogencontaining deoxyribonucleic ribosephosphate polynucleotide mitochondrion biochemistry mitochondria ribonucleic chloroplast nitrogenous nucleobases pyrimidines replication chromosome sequencing hereditary molecular evolution structure longchain undefined cytosine mutation molecule backbone genetic adenine cloning guanine helical nucleic purines thymine genome double embryo nuclei ribose spiral pairs helix genes human acids chain acid acgt base cell gene stem dna rna map