leptotene

• اسم يشير إلى المرحلة الأولى من الطور التمهيدي للانقسام الاختزالي، وفيها تظهر الكروموسومات كخيوط رفيعة.

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.

   المرحلة الرقيقة من الطور التمهيدي الاختزالي

   • 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.