(Definition of âposteriorlyâ from the Cambridge Advanced Learner's Dictionary & Thesaurus Â© Cambridge University Press) Translations of âposteriorlyâ in Chinese (Simplified)
In this diagram of a duplicated chromosome, (2) identifies the centromereâthe region that joins the two sister chromatids, or each half of the chromosome.he centromere (centro- + -mere) is the part of a chromosome that links sister chromatids. During mitosis, spindle fibers attach to the centromere via the kinetochore. Centromeres were first defined as genetic loci that direhromosomes.
The term tetrad is referring to the 4 chromatids present in the two replicated chromosomes that associate during prophase I of meiosis. Once crossing over has happened, the 4 chromatids are all genetically distinct from each other. During anaphase I, remember that the homologous chromosomes separate from each other.