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n. pl. syn·ap·ses (-sēz)
The side-by-side association of homologous chromosomes during the first prophase of meiosis.

[New Latin, from Greek sunapsis, point of contact; see synapse.]


n, pl -ses (-siːz)
1. (Biology) cytology the association in pairs of homologous chromosomes at the start of meiosis
2. (Physiology) another word for synapse
[C19: from New Latin, from Greek sunapsis junction, from sunaptein to join together, from syn- + haptein to connect]


(sɪˈnæp sɪs)

n., pl. -ses (-sēz).
1. the pairing of homologous chromosomes, one from each parent, during early meiosis.
[1645–55; < New Latin < Greek sýnapsis junction =synap-, s. of synáptein to make contact (syn- syn- + háptein to touch) + -sis -sis]
syn•ap′tic (-tɪk) adj.
syn•ap′ti•cal•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.synapsis - the side by side pairing of homologous maternal and paternal chromosomes at the start of meiosissynapsis - the side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis
leptotene - the first stage of the prophase of meiosis
biological process, organic process - a process occurring in living organisms


n. sinapsis, aparejamiento de cromosomas homólogos al comienzo de la meiosis.
References in periodicals archive ?
For example, regulation of ubiquitination via UBE3A with phoshorylation was impaired, and it led to increased synapsis and dendritic spine density in an autism proband with a mutant of T485 (4,5).
Deficiency of Tdrd9 in male mice is associated with sterility by failure of chromosome synapsis (Shoji et al.
It is not known how hormone-disrupting pollutants such as p,p'-DDE and PCBs interfere with the meiotic phase, but infertile men often have an impaired chromosome synapsis and an increased frequency of chromosomes that are missing a recombination site (Martin 2006; Sun et al.
Based on the 2000 report developed by the Synapsis Foundation, the problem relates to about 10, 000 children and adolescents in Poland [2].
It's like a see-saw," said Karim Hijazi from Synapsis aviation consultants in the UAE.
sup][1] Prior to maturation, the visual cortex is subjected to internal and external influences, which modulate the neural signal pathway and synapsis, and irreversibly alter the developing visual cortex and pathway.
Raytheon AnschE-tz's Synapsis INBS is designed to improve situational awareness and provide easy adaptation to suit different and changing mission scenarios.
2] This type of rearrangement takes place during meiosis I and involves formation of a hexavalent configuration that allows the full synapsis of homologous segments.
Volgens die Online Etymology Dictionary beteken die Griekse woord synapsis "konjunksie" en skakel dit met die werkwoord synaptein wat "omvat", "saamvoeg", "saambind" of "verbind" beteken.
Finally, through non-disjunction some of the paired chromosomes representing paired linkage groups may not separate during synapsis and therefore more than the ordinary simplex number may be present in a portion of the mature germ cells.
Raytheon Anschutz has developed the Synapsis ECDIS as a PC-based application to display both raster charts and S-57 or S-63 vector electronic charts.
Tambien se encuentran ocho generos endemicos: Synapsis (Schlegeliaceae), Platygyna (Euphorbiaceae), Behaimia y Hebestigma (Leguminosae), Espadaea y Henoonia (Solanaceae), Doerpfeldia (Rhamnaceae) y Neomezia (Primulaceae).