Chromosome morphology and behavior during meiosis.

<p>(A) Early meiosis-II metaphase from the Pc testis, highlighting the absence of telocentrics. (B and C) Meiosis-I metaphase from the Pc testis, highlighting the presence of a ring-like multivalent consisting of two metacentrics (asterisks). (D) Meiosis-I metaphase from the Ps testis. (E) Meiosis-I prophase from the Ps ovary. (F) Meiosis-I prophase from the medaka ovary. No multivalent is seen in Ps and medaka. Individual metacentrics are indicated by arrows. Scale bars, 5 µm.