The smallest structural unit of an organism that is capable of independent functioning. (becominghuman.org)
The diamond - like structural unit consists of six - sided rings of carbon atoms bonded together in chains surrounded by a halo of hydrogen atoms. (sciencedaily.com)
Much of this DNA is no longer capable of moving, but is likely «auditioning» perhaps as a regulator of gene function or in homologous recombination, which is a type of genetic recombination where the basic structural units of DNA, nucleotide sequences, are exchanged between two DNA molecules to repair breaks in the DNA strands. (carnegiescience.edu)