Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. The third stage of the prophase of meiosis during which the homologous chromosomes become short and thick and divide into four distinct chromatids.
Wiktionary
- n. biology The third prophase of meiosis, during which the chromosomes shorten and divide into four chromatids
GNU Webster's 1913
- n. (Biol.) The third stage of the prophase of meiosis, the stage in which the pairing of homologous chromosomes has been completed.
WordNet 3.0
- n. the third stage of the prophase of meiosis
Etymologies
- French pachytène : Greek pakhus, thick + French -tène, ribbon (from Latin taenia; see taenia). (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“Each chromosome is identifiable by its relative length, by the location of its centromere, which is readily observed at the pachytene stage, and by the individuality of the chromomeres strung along the length of each chromosome.”
Nobel Lecture The Significance of Responses of the Genome to Challenge
“By 1931, however, means of studying the "string" in some detail was provided by newly developed methods of examining the ten chromosomes of the maize complement in microsporocytes at the pachytene stage of meiosis.”
Nobel Lecture The Significance of Responses of the Genome to Challenge
“The increase in clustered cells, is probably attributable in part to the recently described re-clustering of the centromeres at the side-by-side spindle pole bodies right after pachytene”
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