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*  Homologous chromosome
Genetic crossing-over, a type of recombintion, occurs during the pachytene stage of prophase I. In addition, another type of ... During the zygotene stage of prophase I, the homologous chromosomes pair up with each other. This pairing occurs by a synapsis ... At the diplotene stage of prophase I the synaptonemal complex disassembles before which will allow the homologous chromosomes ... Nondisjunction which occurs at this stage can result in normal daughter cells and deformed cells. While the main function of ...
*  Synapsis
ATR, BRCA1 and gammaH2AX localize to unsynapsed chromosomes at the pachytene stage of meiosis in human oocytes and this may ... BRCA1 and gammaH2AX localize to unsynapsed chromosomes at the pachytene stage in human oocytes". Reprod. Biomed. Online. 18 (1 ...
*  Genetic recombination
During prophase I (pachytene stage) the four available chromatids are in tight formation with one another. While in this ...
*  FANCD2
... zygotene and early pachytene stages of meiosis. In synaptonemal complexes of meiotic chromosomes, activated FANCD2 protein co- ... FANCD2 mutant mice exhibit chromosome mis-pairing during the pachytene stage of meiosis and germ cell loss. Activated FANCD2 ... Chun J, Buechelmaier ES, Powell SN (2013). "Rad51 paralog complexes BCDX2 and CX3 act at different stages in the BRCA1-BRCA2- ...
*  FANCA
... the FANCA protein is ordinarily present at a high level during the pachytene stage of meiosis. This is the stage when ... The three distinct stages of mammalian erythroid development are primitive, foetal and adult definitive. Adult, or definitive ... As FANCA is also linked to cell-cycling and its progression from G2 phase, the stage impaired in megaloblastic anaemia, its ... These include: they are larger in size (primitive even more so than foetal), circulate during early stages of development with ...
*  Synaptonemal complex
Previous to the pachytene stage, during leptonema, the lateral elements begin to form and they initiate and complete their ... This "tripartite structure" is seen during the pachytene stage of the first meiotic prophase, both in males and in females ... pairing during the zygotene stage. After pachynema ends, the SC usually becomes disassembled and can no longer be identified. ...
*  Spermatocyte
In spermatocytes, HRR events occur mainly in the pachytene stage of meiosis and the gene conversion type of HRR is predominant ... During mouse spermatogenesis, the mutation frequencies of cells at the different stages, including pachytene spermatocytes, are ... By the end of the anaphase stage, there is one at each pole moving between the spindle poles without actually having physical ... These mutations involve double strand break repair impairment, which can result in arrest of spermatogenesis at stage IV of the ...
*  Chiasma (genetics)
Irradiation during the leptotene-zygotene stages of meiosis, that is, prior to the pachytene period in which crossover ... Similarly, in the grasshopper Chorthippus brunneus, exposure to X-irradiation during the zygotene-early pachytene stages caused ... of genetic material are thought to occur during the previous pachytene stage. Sister chromatids also form chiasmata between ... The grasshopper Melanoplus femurrubrum was exposed to an acute dose of X-rays during each individual stage of meiosis, and ...
*  Chromosomal crossover
It is one of the final phases of genetic recombination, which occurs in the pachytene stage of prophase I of meiosis during a ... Irradiation during the leptotene-zygotene stages of meiosis (that is, prior to the pachytene period in which crossover ... Similarly, in the grasshopper Chorthippus brunneus, exposure to X-irradiation during the zygotene-early pachytene stages caused ... The grasshopper Melanoplus femur-rubrum was exposed to an acute dose of X-rays during each individual stage of meiosis, and ...
*  FANCG
... zygotene and early pachytene stages of meiosis. Loss of FANCG causes neural progenitor apoptosis during forebrain development, ... Chun J, Buechelmaier ES, Powell SN (2013). "Rad51 paralog complexes BCDX2 and CX3 act at different stages in the BRCA1-BRCA2- ...
*  Mega-telomere
... are frequently used to identify telomeric sequence repeats on mitotic metaphase and interphase or meiotic pachytene-stage ...
*  Outline of cell biology
It is one of the final phases of genetic recombination, which occurs in the pachytene stage of prophase I of meiosis during a ... Interphase - The stages of the cell cycle that prepare the cell for division. Mitosis - In eukaryotes, the process of division ... Prophase - The stage of mitosis in which the chromatin condenses into a highly ordered structure called chromosomes and the ... Metaphase - The stage of mitosis in which condensed chromosomes, carrying genetic information, align in the middle of the cell ...
*  MSH4
... functions during the pachytene stage of meiosis, indicating that it is not needed for establishing the preceding stages of ...
*  Premature ovarian failure
... required for the homologous recombinational repair of DNA double-strand breaks that are present during the pachytene stage of ...
*  Cytogenetics
... pattern of DNA nicking and repair synthesis in male meiotic cells of lilies and rodents during the zygotene-pachytene stages of ... The next stage took place after the development of genetics in the early 20th century, when it was appreciated that the set of ... is a favored organism for the cytological examination of meiosis since the chromosomes are large and each morphological stage ...
*  List of MeSH codes (G04)
... pachytene stage MeSH G04.335.134.220.220.750 --- metaphase MeSH G04.335.134.220.220.781 --- mitosis MeSH G04.335.134.220. ... pachytene stage MeSH G04.335.233.750.500.220.750 --- metaphase MeSH G04.335.233.750.500.220.781 --- mitosis MeSH G04.335. ... pachytene stage MeSH G04.335.134.220.220.937 --- telophase MeSH G04.335.134.220.250 --- cytokinesis MeSH G04.335.134.500 --- ... pachytene stage MeSH G04.335.233.750.500.220.937 --- telophase MeSH G04.335.233.750.500.250 --- cytokinesis MeSH G04.335. ...
*  List of MeSH codes (G05)
... pachytene stage MeSH G05.105.220.750 --- metaphase MeSH G05.105.220.781 --- mitosis MeSH G05.105.220.781.050 --- anaphase MeSH ... pachytene stage MeSH G05.105.220.937 --- telophase MeSH G05.180.099 --- chromosome breakage MeSH G05.180.185 --- dna ...
*  List of MeSH codes (G07)
... pachytene stage MeSH G07.382.374.220.220.750 --- metaphase MeSH G07.382.374.220.220.781 --- mitosis MeSH G07.382.374.220. ... pachytene stage MeSH G07.382.843.750.500.220.750 --- metaphase MeSH G07.382.843.750.500.220.781 --- mitosis MeSH G07.382. ... pachytene stage MeSH G07.574.249.410.750.500.220.750 --- metaphase MeSH G07.574.249.410.750.500.220.781 --- mitosis MeSH ... pachytene stage MeSH G07.382.374.220.220.937 --- telophase MeSH G07.382.374.220.250 --- cytokinesis MeSH G07.382.374.500 --- ...
*  TAF7l
Then, TAF7l slowly transitions to the nucleus during the mid-stage pachytene cell, where there is also a dramatic increase in ... Then, at later stages, when TAF7l transitions into the nucleus, which happens around the time when the somatic (diploid) to ... In early stage spermatocytes, for example in primary spermatocytes (still diploid at this point), TAF7l is located in the ... Additionally, there is a reciprocal relationship to that of TAF7 expression: Unlike TAF7l, TAF7 at early stages is expressed in ...
*  Oogenesis
... zygotene and pachytene) stages of meiosis. For those primary oocytes that continue to develop in each menstrual cycle, however ... However, this process is also halted at the metaphase II stage until fertilization, if such should ever occur. When meiosis II ... Meiosis I of ootidogenesis begins during embryonic development, but halts in the diplotene stage of prophase I until puberty. ... The mouse oocyte in the dictyate (prolonged diplotene) stage actively repairs DNA damage, whereas DNA repair is not detectable ...
*  Germ cell
... zygotene and pachytene) stages of meiosis. The long period of meiotic arrest at the four chromatid dictyate stage of meiosis ... The mouse oocyte in the dictyate (prolonged diplotene) stage of meiosis actively repairs DNA damage, whereas DNA repair was not ... Different timing of maturation: oogenic meiosis is interrupted at one or more stages (for a long time) while spermatogenic ... Homologous recombinational repair of double-strand breaks occurs in mouse during sequential stages of spermatogenesis, but is ...
*  Chromomere
"Preparation and analysis of spermatocyte meiotic pachytene bivalents of pigs for gene mapping" - Nature "Physical mapping of ... during the prophase stage of meiosis. The linear pattern of chromomeres is linked to the arrangement of genes along the ... Chromomeres are organized in a discontinuous linear pattern along the condensed chromosomes (pachytene chromosomes) ... they are not organized in a clear pattern along as they are in normal pachytene chromosomes of meiosis. The two sister ...
*  Fanconi anemia
Chun J, Buechelmaier ES, Powell SN (2013). "Rad51 paralog complexes BCDX2 and CX3 act at different stages in the BRCA1-BRCA2- ... zygotene and early pachytene are enriched for FANC proteins. This finding suggests that recombinational repair processes ... In mice, spermatogonia, preleptotene spermatocytes, and spermatocytes in the meiotic stages of leptotene, ...
*  Meiosis
The pachytene (pronounced /ˈpækɪtiːn/ PAK-ə-teen) stage, also known as pachynema, from Greek words meaning "thick threads",. At ... The first stage of prophase I is the leptotene stage, also known as leptonema, from Greek words meaning "thin threads".In this ... and chiasmata are not visible until the next stage. During the diplotene stage, also known as diplonema, from Greek words ... It is the stage of the life cycle when a cell gives rise to two haploid cells (gametes) each having half as many chromosomes. ...
*  Goniaea australasiae
The meiotic stage at which this form of recombination takes place has been identified as "early pachytene," and it is well ... australasiae to study the time of genetic recombination in relation to the sequence of stages in meiosis, the relationship of ...
*  Neurospora crassa
... disturbed chromosome pairing or disturbed pachytene or diplotene). The number of genes affecting the diploid stage was ... The haploid multicellular vegetative stage, although physically much larger than the diploid stage, characteristically has a ... In haploid multicellular fungi, such as N. crassa, meiosis occurring in the brief diploid stage is one of their most complex ... In N. crassa, recessive mutations affecting the diploid stage of the life cycle are quite frequent in natural populations. ...