chromatidszála

A chromatidszála, often referred to as a chromosome thread, is a fundamental component of the cell nucleus. It is essentially the condensed form of chromatin, which is a complex of DNA and proteins that makes up chromosomes. During cell division, specifically in the S phase of the cell cycle, DNA replication occurs. This process results in each chromosome consisting of two identical sister chromatids, which remain attached at a central region called the centromere. The chromatidszála refers to the structure of these duplicated chromosomes, where the DNA is tightly coiled and organized. These threads are crucial for the accurate segregation of genetic material into daughter cells during mitosis and meiosis. The precise arrangement and condensation of the chromatidszála ensure that no genetic information is lost or duplicated inappropriately. After cell division is complete, the chromatidszála decondense back into chromatin within the newly formed nuclei.