DNA, or deoxyribonucleic acid, is the molecule that makes up an organismâs genome in the nucleus of every cell. It consists of genes, which are the molecular codes for proteins â the building blocks of our tissues and their functions.he percentage of genes or DNA that organisms share records their similarities. We share more genes with organisms that are more closely related to us. Humans belong to the biological group known as Primates, and are classified with the great apes, one of the major groups of the primate evolutionary tree.
exists and is an alternate of . Making the world better, one answer at a time. Sister chromatids are attached to each other in the part of the chromosome called the centromere. Sister chromatids are attached to each other in the part of the chromosome called the centromere.
In this case, the pairs of sister chromatids are still attached to each other. So at this stage, the daughter cells get 23 chromosomes each (of the pair of homologous chromosomes) and 46 chromatids in total (which are actually 23 pairs of sister chromatids attached at the centromere).