synapsis

Zygotene

... prophase 1 of meiosis , character ized by the synapsis , or pairing, of homologous chromosomes to form ...62; The zygotene stage sees the completion of synapsis . The combined homologous chromosomes are said to be bivalent , a reference to the two homologou...

Zygote

... prophase 1 of meiosis , character ized by the synapsis , or pairing, of homologous chromosomes to form a bivalent . Full article >>> A zygote (Greek: ζυγω"όν) is a cell that is the result of fertilization . That is, two haploid cell s-usually (but not always) an ovum from a fema...

Tetrad

...rad The four chromatid s in each cluster during synapsis ; formed by the two sister chromatids in each of...tetrad A pair of homologous chromosomes during synapsis ( prophase I of meiosis ). A tetrad consists of four chromatid s. tetrapod s A nontaxonomic d...

Synapton

...erse fibers. Fewer nodule s are present after de synapsis . Full article >>> Synapton The t...at holds homologous chromosomes together during synapsis in prophase of meiosis I. synchronous flight See direct flight. Full article >>> ...

Synaptonemal complex

...erse fibers. Fewer nodule s are present after de synapsis . Full article >>> synaptonemal co...at holds homologous chromosomes together during synapsis in prophase of meiosis I. synchronous flight See direct flight. Full article >>> ...

Synapsis

...2; Pairing of homologous sequence s results in synapsis of homologous chromosomes , but synapsis does not require homology . Facts ... Full article >>> Synapsis (joining) of hom...

Synapse

...rticle >>> synapse (sin-aps) [Gk. synapsis , a union] The locus where one neuron communicates with another neuron in a neural pathway; ... Full article >>> synapse s - communicating cell - cell junction that allows signals to pass from a nerve cell to another cell...

Sister Chromatids

... 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. Full article >>> Centromere : A specialized constricted region of a chromosome to which spin...

Sister chromatid

...aterial between non- sister chromatid s during synapsis of meiosis I. Crustacea class in the phylum Arthropoda. Most members of this class are aquatic, although a few are terrestrial. Full article >>> Centromere : A specialized constricted region of a chromosome to which spin...

Pachytene

... the synaptonemal complex is fully formed (when synapsis ends), crossing over occurs. Full article >>> (1) Four homologous chromatid s in a bundle in the first meiotic prophase and metaphase . The meiotic configuration of four chromatid s first seen in pachytene . There is one tetr...

Nodule

...;>> Fewer nodule s are present after de synapsis . Prophase of meiosis I occurs in morphologically distinguishable stages (above). The width of the synaptonemal complex (SC), 200 nm between axial elements , is 100 X the width of a DNA helix. Full article >>> A member of the...

Homologies

...es on the other branch. synapse (sin-aps) [Gk. synapsis , a union] ... Full article >>> Gene super family : A large group of genes related (often poorly) by sequence homologies or by the structures of their products, and by their involvement in different aspects of the same larger pro...

Genetic material

... 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. Full article >>> Chromosome a distinguishable unit of genetic material in the nucleus of ...

Crossing over

... material between non- sister chromatids during synapsis of meiosis I. Crustacea class in the phylu...c material between non sister chromatids during synapsis of meiosis I. cryptic coloration ... Full article >>> Crossing over : The breakin...

Crossing

... material between non- sister chromatids during synapsis of meiosis I. Crustacea class in the phylu...c material between non sister chromatids during synapsis of meiosis I. cryptic coloration ... Full article >>> Crossing over : The break...

Bivalent

...ivalent The pairs of homologous chromosomes at synapsis in the first meiotic division , a tetrad . bivalves The clams, mussels, and other molluscs that possess a two-valved shell , filtering gills , and a shovel-like foot . Full article >>> Bivalent a pair of homologous chromosome...