chromomere A small, bead-like structure that is visible in a chromosome during prophase of meiosis and mitosis, when it is relatively uncoiled (in particular at the leptotene and zygotene stages of meiosis). In polytene chromosomes, the chromomeres lie in parallel, giving the chromosome its banded appearance. Chromomeres in corresponding positions on homologous chromosomes pair during meiosis in many organisms.

chromomere A small beadlike structure visible in a chromosome during prophase of meiosis and mitosis, when it is relatively uncoiled (in particular at the leptotene and zygotene stages of meiosis). Chromomeres in corresponding positions on homologous chromosomes pair during meiosis in many organisms.