leptonema

== English == === Etymology === From lepto- (“thin”) + -nema (“filiform structure”). === Noun === leptonema (plural leptonemas) The stage during meiosis Prophase 1 where the chromosomes condense after S-phase and interphase, resulting in the recombination of haploid chromosome pairs with sister chromatids held by a single non-dividing centromeres, and followed by the zygotene stage. ==== Synonyms ==== leptotene === Anagrams === Ptolemean