Spermatocyte
Primary spermatocytes are diploid (2N) cells. After meiosis I, two secondary spermatocytes are formed. Secondary spermatocytes ... There are two types of spermatocytes, primary and secondary spermatocytes. Primary and secondary spermatocytes are formed ... Each secondary spermatocyte will form two spermatids after Meiosis II. Although spermatocytes that divide mitotically and ... Primary spermatocytes are arrested after DNA synthesis and prior to division. Spermatocytes regularly overcome double-strand ...
Gametogenesis
These primary spermatocytes. These diploid cells undergo meiotic division to create secondary spermatocytes. These secondary ... spermatocytes undergo a second meiotic division to produce immature sperms or spermatids. These spermatids undergo ...
Gustav Eisen
Polymorphous spermatogonia, auxocytes, and spermatocytes. Journal of Morphology. DOI: 10.1002/jmor.1050170102. Eisen, G. A. ...
Sponge
Oocytes and spermatocytes are reproductive cells. Sclerocytes secrete the mineralized spicules ("little spines") that form the ...
Synizesis (biology)
McClung, CE (1905). "The chromosome complex of orthopteran spermatocytes". The Biological Bulletin. 9 (5): 304-340. doi:10.2307 ...
Spermatogenesis
Thus, the primary spermatocyte gives rise to two cells, the secondary spermatocytes, and the two secondary spermatocytes by ... The primary spermatocyte divides meiotically (Meiosis I) into two secondary spermatocytes; each secondary spermatocyte divides ... Spermatidogenesis is the creation of spermatids from secondary spermatocytes. Secondary spermatocytes produced earlier rapidly ... producing two diploid intermediate cells called primary spermatocytes. Each primary spermatocyte then moves into the adluminal ...
Isostichopus fuscus
Additionally, Spherical spermatocytes accumulate at the periphery. The accumulation of spermatocytes causes a decrease in the ... Developing spermatocytes are still present at the periphery layer. a layer of connective tissue is present at the gonad wall ... A thin layer of spermatocytes is present at the periphery. Spawning is when the individuals have mated, and therefore the ...
SLC26A8
This gene is expressed primarily in spermatocytes. Two transcript variants encoding different isoforms have been found. SLC26A8 ...
Germline development
... divide by mitosis to produce spermatocytes committed to meiosis. The spermatocytes divide by meiosis to form spermatids. The ...
Health effects of Bisphenol A
They had gonads with oogonia, spermatogonia and spermatocytes. Researchers concluded that BPA did not induce but did contribute ...
Viral gametocytic hypertrophy
A hypertrophy has also been observed in spermatocytes; in general an enlargement of the gametes is observed. Such viruses have ...
ZFY
In mice, Zfy genes are necessary for meiotic sex chromosome inactivation (MSCI). In Zfy knockout spermatocytes, sex chromosomes ... in spermatocytes". Human Molecular Genetics. 25 (24): 5300-5310. doi:10.1093/hmg/ddw344. PMC 5418838. PMID 27742779. "ZFY Gene ...
Major sperm protein
MSP is exclusively synthesized in spermatocytes of the nematodes. The MSP has two main functions in the reproduction of the ...
Achiasmate Meiosis
In oocytes, neither the 4th nor the sex-determining chromosomes form chiasmata; in spermatocytes, no chiasmata form on any of ... In Drosophila melanogaster, both oocytes and spermatocytes display achiasmy. ... and mouse spermatocytes. Heterochromatin is a tightly grouped type of DNA. Threads of heterochromatin have been observed in ... heterochromatin of homologous chromosomes remains associated after centromere pairing dissolves in mouse spermatocyte meiosis ...
Non-random segregation of chromosomes
Univalent chromosome segregation during the first meiotic division in spermatocytes. In: Chromosoma 91, page 95-100 (1985) [52 ... René Camenzind, R. Bruce Nicklas: The non-random chromosome segregation in spermatocytes of Gryllotalpa hexadactyla. A ...
KCNU1
1998). "Slo3, a novel pH-sensitive K+ channel from mammalian spermatocytes". J. Biol. Chem. 273 (6): 3509-16. doi:10.1074/jbc. ... a novel pH-sensitive K+ channel from mammalian spermatocytes". J. Biol. Chem. 273 (6): 3509-16. doi:10.1074/jbc.273.6.3509. ...
Spermatogonium
Type B cells, which undergo growth and become primary spermatocytes. Anticancer drugs such as doxorubicin and vincristine can ...
Daniel Djakiew
Djakiew, D. & Dym, M. (1988). Pachytene spermatocyte proteins influence Sertoli cell function. Biology of Reproduction 39: 1193 ...
Gametocyte
Male gametocytes are called spermatocytes and female gametocytes are called oocytes. The term gametocyte is also used, for ... Male gametocytes are called spermatocytes, and female gametocytes are called oocytes. The development of gametogonia to primary ...
Germ cell
The two secondary spermatocytes undergo the second meiotic division to form four haploid spermatids. These spermatids ... Some of these cells stop proliferation and differentiate into primary spermatocytes. After they proceed through the first ... but is most prominent in spermatocytes. The lower frequencies of mutation in germ cells compared to somatic cells appears to be ... meiotic division, two secondary spermatocytes are produced. ...
Spermatidogenesis
... is the creation of spermatids from secondary spermatocytes during spermatogenesis. Secondary spermatocytes ... The brevity of this stage means that secondary spermatocytes are rarely seen in histological preparations. Mouse stem cells ...
Meiotic recombination checkpoint
August 2005). "Surveillance of different recombination defects in mouse spermatocytes yields distinct responses despite ... which may partially be the reason why only Spo11 mutant spermatocytes but not oocytes fail to transition from prophase I to ... "The meiotic checkpoint monitoring synapsis eliminates spermatocytes via p53-independent apoptosis". Nature Genetics. 18 (3): ...
Demosponge
Spermatocytes develop from the transformation of choanocytes and oocytes arise from archeocytes. Repeated cleavage of the ...
Interferon-inducible GTPase 5
Leydig cells, spermatogonia, and preleptotene spermatocytes were reported to have low expression. There was low to medium ...
DNA repair and recombination protein RAD54-like
The frequency of spontaneous chromosome breaks during meiosis was measured in the spermatocytes of both wild type mice and ... "Rad54/Rad54B deficiency is associated to increased chromosome breakage in mouse spermatocytes". Mutagenesis. 33 (4): 323-332. ...
Sperm
... which differentiate into spermatocytes. The spermatocytes then undergo meiosis, reducing their chromosome number by half, which ... These divide and differentiate into spermatocytes, which undergo meiosis to form spermatids. In the spermatid stage, the sperm ...
Spermatogonial stem cell
Here the spermatocytes pass through the basal membrane via the sertoli cell barrier. SSCs stay within their niche where they ... Type B spermatogonia, on the other hand, differentiate into spermatocytes, which in turn undergo meiosis to eventually form ... Alternatively, they go on to differentiate into spermatocytes, spermatids and finally spermatozoa. One SSC is the precursor for ... is a spermatogonium that does not differentiate into a spermatocyte, a precursor of sperm cells. Instead, they continue ...
Annulate lamella
These lamella are characteristics of the oocytes, spermatocytes, some somatic and cancer cells. They are characteristic of ...
Patricia Louise Dudley
Dudley, P.L. (1972). "Synaptonemal polycomplexes in spermatocytes of the gooseneck barnacle, Pollicipes polymerus Sowerby ( ...
Spindle checkpoint
"Tension-sensitive kinetochore phosphorylation and the chromosome distribution checkpoint in praying mantid spermatocytes". ...