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zygotene

Term: zygotene
Literally meaning: “yoked bands”
Origin: Anc Greek
ζυγός/zygos(=yoke, doubled)
ταινία/taenia(=band, ribon)> τανύω/tanyo(=strain)
Coined/History
by V Gregoire (1907)
Definition
Zygotene is one of the stages of prophase I in which the homologous chromosomes are associating side by side.
Term: diplotene
Literally meaning: “double bands”
Origin: Anc Greek
διπλός/diplos( =duplex) > δι-/di-(=prefix meaning twice) > δις/dis(=two, double)
ταινία/taenia(=band, ribon)> τανύω/tanyo(=strain)
Coined/History
In 1912 by The Belgian cytologist and gynecologist Hans von Winiwarter (1875-1949) who had an interest in the nature of gender determination, reported from his studies of fetal ovaries that the human diploid chromosome number was probably 48.
Definition
Diplotene is one of the stages of prophase I in which each homologous chromosome pair have separated from one another except at chiasmata.
Term: diakinesis
Literally meaning: “double bands”
Origin: Anc Greek
δια-/dia(=apart)
κίνησις/kinesis(=movement)
Coined/History
by Häcker (1897
Definition
Diakinesis is one of the stages of prophase I in which the chromosomes are well separated from one another. This stage is recognized by the highly condensed condition of the chromosomes, the homologous pair of which are held together by chiasmata.

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