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Synapsis

Biology SynapseSynapton

synapsis
temporary conjunction of the pairs of homologous chromosomes (from male and female parent) previous to the maturation of germ cells, association or union ...

 


Synapsis: The pairing of homologous chromosomes during the meiotic phase of cell division
The act of lining up side by side by homologous chromosomes during the meiotic phase of cell division ...

Synapsis
The pairing of homologous chromosomes or of homologous chromosomal regions.
Synteny
Genes which occur in the same order on the chromosome of different species.

synapsis The alignment of chromosomes during meiosis I so that each chromosome is beside its homologue.
synaptic cleft The space between the end of a neuron and an adjacent cell.PICTURE ...

synapsis
The pairing of replicated homologous chromosomes during prophase I of meiosis.
synaptic cleft ...

Synapsis The close pairing of homologous chromosomes in meiotic prophase which enables crossovers to occur.

Synapsis. The pairing of homologous chromosome pairs during prophase of the first meiotic division, when crossing over occurs.
T ...

Synapsis
See syndesis.
Related Terms:
Syndesis
= Synapsis. The conjugation or fusion of homologous chromosomesduring prophase of the first meiotic division, when crossing over occurs.

Synapsis (joining) of homologous chromosomes produces tetrads (also called bivalents).
The two chromosomes may exchange fragments by a process called crossing over.

Synapsis. The synaptonemal complex begins to form.
DNA strands of nonsister chromatids begin the process of recombination. How they are able to do so across the synaptonemal complex, which is over 100 nm thick, is unknown.
3. Pachytene ...

synapsis The pairing of homologous chromosomes that occurs in Prophase I of meiosis.
synaptic cleft The narrow space between the terminal ending of a neuron and the receptor site of the postsynaptic cell.

= Synapsis. The conjugation or fusion of homologous chromosomesduring prophase of the first meiotic division, when crossing over occurs. Normally syndesis starts at the telomeres and passes on to the centromeres like a zipper.
Related Terms: ...

To suppress crossing over, balancer chromosomes are the products of multiple, nested chromosomal inversions so that synapsis between homologous chromosomes is disrupted.

A giant chromosome produced by an endomitotic process in which, following synapsis of the two homologues, multiple rounds of replication produce chromatids that remain synapsed together in a haploid number of chromosomes.

Synapsis is the process of linking of the replicated homologous chromosomes. The resulting chromosome is termed a tetrad, being composed of two chromatids from each chromosome, forming a thick (4-strand) structure.

crossing over
the reciprocal exchange of genetic material between non-sister chromatids during synapsis of meiosis I.
Crustacea
class in the phylum Arthropoda. Most members of this class are aquatic, although a few are terrestrial.

[Gr. zygotos - yoked together; Gr. tainia - ribbon]. The second stage in prophase 1 of meiosis, characterized by the synapsis, or pairing, of homologous chromosomes to form a bivalent.

See also: Chromosome, Chromosomes, Meiosis, Cells, Cell