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see crossing overcrossing over,
process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis. At that stage each chromosome has replicated into two strands called sister chromatids.
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the paired temporary association of homologous chromosomes during which an exchange of homologous chromosomal areas may occur. Under the influence of various factors, chromosomes readily contract into a ball during synapsis. The British scientist D. E. Moore described this phenomenon and introduced the term “synapsis” in 1895.


(cell and molecular biology)
Pairing of homologous chromosomes during the zygotene stage of meiosis.
References in periodicals archive ?
At CANSEC 2013, Raytheon Anschuetz will demonstrate the Synapsis Intelligent Bridge Control System to customers, dignitaries and visitors who attend the exposition-showcasing the system's extensive features and capabilities.
We're proud of the impact of the myths and facts campaign in the UK and are very excited to be working with SYNAPSIS to create greater awareness and understanding of autism in Poland.
Motorola worked with a small company called Synapsis on easier user interfaces so the data in Compliance Connect spreadsheets and in the IPC data forms it also uses would go into a central database.
That led Motorola to work with a small IT firm, Synapsis, which has been bought by PTC, and the gist of the systems they developed together are now within Windchili PLM.
grossum meiosis, and report new discoveries regarding the mechanisms involved in pairing, synapsis and chiasma formation of this species, using state-of the-art molecular cytogenetic techniques.
Piaggio has appointed Air Synapsis of Dubai as sales representative for the P180 Avanti II twin turboprop in Jordan, Lebanon and the United Arab Emirates.
We compared Egypt and Lebanon and technically Beirut could be the best choice for Air Arabia for their third hub," Karim Hijazi, Managing Director of Air Synapsis, told Khaleej Times.
Gene activity dependent on chromosome synapsis in the polytene chromosomes of Drosophila melanogaster.
In another study (5), either complete or partial meiotic arrest was found to be associated with abnormalities in synapsis in three patients.
This process of synapsis does not occur in mitosis.
En Santiago, Leonardo Covalschi, gerente general de Synapsis, la consultora informatica de Enersis, puede dar fe de que vivimos tiempos de convergencia.