During telophase I of meiosis, the chromosomes decondense and cytokinesis comes to an end. Cytokinesis refers to the division of the cytoplasm, which results in two haploid daughter cells at the completion of telophase I.Know More
Meiosis I begins with prophase I, which is when the most important processes occur. During this substage of meiosis I, the chromosomes and the centrioles move to opposite sides of the cell. The nuclear membrane also begins to dissolve during prophase I. The chromosomes go through the process of "crossing over," which allows them to exchange genetic material, enhancing genetic variety.
After metaphase I and anaphase I, telophase I occurs. In some species, the chromosomes decondense during this substage. Decondensation typically does not occur if the cell undergoes rapid meiosis. At the end of this substage, there are two haploid daughter cells. Haploid means that a cell contains a complete set of chromosomes.
At the conclusion of telophase I, the cell enters meiosis II. This process consists of prophase II, metaphase II, anaphase II and telophase II. The primary difference between telophase I and II is that there are four haploid daughter cells present at the conclusion of telophase II instead of the two haploid daughter cells present at the end of telophase I.Learn more about Cells
During telophase, the chromosomes uncoil, two separate nuclei develop and the cytoplasm divides. The cell is completely divided in two by the end of telophase.Full Answer >
Telomeres are sequences of repetitive DNA at the end of a chromosome. They have been compared to the aglets or protective caps on shoelaces because they protect information from being lost from the ends of chromosomes just as aglets keep shoelaces from fraying.Full Answer >
If cytokinesis took place before mitosis, the two daughter cells would end up with only half the required genetic material and, unable to function, would die. In eukaryotic cells, cytokinesis normally happens just after or during the last stage of mitosis, known as telophase.Full Answer >
The nucleolus is chiefly responsible for creating ribosomes, which in turn function as factories for protein synthesis. The nucleolus contains three main organizing regions where transcription and processing of rRNA occurs. It also purportedly aids in other processes, like the packaging of signal recognition particles and the alteration of transfer RNA. The nucleolus is located in the nucleus, and thus only exists in eukaryotic cells.Full Answer >