(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.
During meiosis, the process for gamete formation, homologous chromosomes replicate forming sister chromatids. 1  Sister chromatids pair up forming what is called a tetrad. While in close proximity, homologous chromosomes sometimes exchange sections of DNA. 2  At the end of meiosis, four daughter cells are produced.