leptotene

• Nom désignant la première étape de la prophase de la méiose, au cours de laquelle les chromosomes deviennent visibles sous forme de fines structures filamenteuses.

A noun referring to the first stage of the prophase of meiosis, during which chromosomes become visible as thin, thread-like structures.

1. First stage of meiotic prophaseC2formalscientific

   The initial stage of the prophase of meiosis during which chromosomes become visible as thin, unpaired threads.

   Leptotène

   • During leptotene, the chromosomes begin to condense and become visible under a microscope.
   • The leptotene stage is followed by zygotene in the meiotic process.
   • Researchers observed the pairing of homologous chromosomes after leptotene.