| 释义 |
pachytene
pach·y·tene P0003625 (păk′ĭ-tēn′)n. The third stage of the prophase of meiosis, during which the homologous chromosomes become short and thick and divide into four distinct chromatids.
[French pachytène : Greek pakhus, thick + French -tène, ribbon (from Latin taenia; see taenia).]pachytene (ˈpækɪˌtiːn) n (Biology) the third stage of the prophase of meiosis during which the chromosomes become shorter and thicker and divide into chromatids[from Greek pakhus thick + tainia band]pach•y•tene (ˈpæk ɪ tin)
n. the third stage of prophase in meiosis, during which each chromosome pair separates into sister chromatids with some breakage and crossing over of genes. [< French pachytène (1900) = Greek pachý(s) thick + French -tène -tene] Thesaurus| Noun | 1. | pachytene - the third stage of the prophase of meiosisprophase - the first stage of meiosisphase, stage - any distinct time period in a sequence of events; "we are in a transitional stage in which many former ideas must be revised or rejected" |
pachytene
pachytene[′pak·ə‚tēn] (cell and molecular biology) The third stage of meiotic prophase during which paired chromosomes thicken, each chromosome splits into chromatids, and breakage and crossing over between nonsister chromatids occur. Also known as pachynema. pachytene
pachytene [pak´e-tēn] in prophase of meiosis, the stage following zygotene, during which the chromosomes shorten, thicken, and separate into two sister chromatids joined at their centromeres. Paired homologous chromosomes, which were joined by synapsis, now form a tetrad of four chromatids. Where crossing over has occurred between nonsister chromatids, they are joined by X-shaped chiasmata.pach·y·tene (pak'i-tēn), The stage of prophase in meiosis in which pairing of homologous chromosomes is complete and the paired homologues may twine about each other as they continue to shorten; longitudinal cleavage occurs in each chromosome to form two sister chromatids so that each homologous chromosome pair becomes a set of four intertwined chromatids. Synonym(s): pachynema [pachy- + G. tainia, band, tape] pachytene (păk′ĭ-tēn′)n. The third stage of the prophase of meiosis, during which the homologous chromosomes become short and thick and divide into four distinct chromatids.pach·y·tene (pak'i-tēn) The stage of prophase in meiosis in which pairing of homologous chromosomes is complete; longitudinal cleavage occurs in each chromosome to form two sister chromatids so that each homologous chromosome pair becomes a set of four intertwined chromatids. [pachy- + G. tainia, band, tape]pachytene the stage in prophase 1 of MEIOSIS where the paired HOMOLOGOUS CHROMOSOMES each split into two CHROMATIDS, the whole structure being called a TETRAD.pachytene
Words related to pachytenenoun the third stage of the prophase of meiosisRelated Words |