centroméránál

Centroméránál is a Hungarian term that translates to "at the centromere" or "by the centromere." It refers to the specific region on a chromosome where the two sister chromatids are most tightly joined. This region plays a crucial role in cell division, specifically during mitosis and meiosis.

The centromere is characterized by its unique chromatin structure, which includes specialized histone proteins. It serves as the attachment site for spindle fibers, which are essential for the accurate segregation of chromosomes to daughter cells. During cell division, the spindle fibers attach to a protein structure called the kinetochore, which assembles at the centromere. This attachment allows for the movement and separation of replicated chromosomes.

The precise location of the centromere on a chromosome determines its shape. Chromosomes are classified based on centromere position: metacentric (centromere in the middle), submetacentric (centromere slightly off-center), acrocentric (centromere very close to one end), and telocentric (centromere at the very end). The term "centroméránál" would be used in a context discussing events or structures located at this critical chromosomal region.