The origin and function of meiosis are currently not well understood scientifically, and would provide fundamental insight into the evolution of sexual...

Meiosis (/maɪˈoʊsɪs/ ; from Ancient Greek μείωσις (meíōsis) 'lessening', since it is a reductional division) is a special type of cell division of germ...

meiosis appears to be repair of DNA damages, particularly double-strand breaks (also see Origin and function of meiosis).[citation needed] The PALB2-BRCA1...

and it is likely an adaptation for removing DNA damages, especially double-strand breaks, from germ line DNA (see Meiosis and Origin and function of meiosis)...

evolutionary origin and adaptive significance of sexual reproduction are discussed in the pages Evolution of sexual reproduction and Origin and function of meiosis...

Germ cells Male infertility Meiosis Oncofertility Oogenesis Origin and function of meiosis Sertoli cells Sexual reproduction Semen analysis de Kretser...

recombinational repair (see Origin and function of meiosis). Human primary oocytes are present at an intermediate stage of meiosis, that is prophase I (see...

Evolution of sexual reproduction Female infertility Female reproductive system Meiosis Oncofertility Oogonium Oocyte Origin and function of meiosis Sexual...

spores by meiosis, a process which reduces the number of chromosomes to half, from two sets to one. The resulting haploid spores germinate and grow into...

H., Bernstein, C. Evolutionary origin and adaptive function of meiosis. In "Meiosis", Intech Publ (Carol Bernstein and Harris Bernstein editors), Chapter...

theory of aging DNA repair DNA replication Free radical damage to DNA Homologous recombination Meiosis Mutation Natural competence Origin and function of meiosis...

haploid sex cells called gametes via meiosis, each of which has a single set of chromosomes. Meiosis involves a stage of genetic recombination via chromosomal...

different theories on the origin of meiosis. The first theory rests upon the idea that meiosis evolved as another method of DNA repair, and thus crossing-over...

during meiosis than mitosis. In meiosis, absence of a chiasma generally results in improper chromosomal segregation and aneuploidy. Points of crossing...

spermatocytes then undergo meiosis, reducing their chromosome number by half, which produces spermatids. The spermatids then mature and, in animals, construct...

failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister...

contain half the number of chromosomes of normal cells and are created by meiosis, with typically a male fertilizing a female of the same species to create...

that function in meiosis and that are widely present among sexual eukaryotes. These results suggested that Giardia duodenalis is capable of meiosis and thus...

produce haploid cells in a process called meiosis. In meiosis, DNA is replicated to produce a total of four copies of each chromosome. This is followed by...

group's common ancestor. A core set of genes that function in meiosis is present in both Trichomonas vaginalis and Giardia intestinalis, two organisms...

mechanism of meiotic recombination and the adaptive function of meiosis. Candida spp. are responsible for candidiasis, causing infections of the mouth and/or...

normal progression of male meiosis. Thus, those cells in which X-Y recombination does not occur will fail to complete meiosis. Structural and/or genetic dissimilarity...

Rad51, Rad52, Mnd1, Dmc1, Msh and Mlh. This finding suggests that the ‘'Acanthamoeba'’ are capable of some form of meiosis and may be able to undergo sexual...

as the original diploid parent cell. Meiosis only occurs in cells of the sex organs, and serves the purpose of generating haploid gametes such as sperm...

that function in meiosis and that are widely present among sexual eukaryotes. These results suggested that G. intestinalis is capable of meiosis and thus...

Areas of focus include structure, function, growth, origin, evolution, distribution, and taxonomy. History of anatomy History of biochemistry History of biotechnology...

these cells undergo meiosis to form haploid spores. Evidence from studies of S. cerevisiae bear on the adaptive function of meiosis and recombination. Mutations...

result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such as pyrimidine dimers caused by exposure to...

parent cell, and a cell division that produces haploid gametes for sexual reproduction (meiosis), reducing the number of chromosomes from two of each type...

H., Bernstein, C. Evolutionary origin and adaptive function of meiosis. In "Meiosis", Intech Publ (Carol Bernstein and Harris Bernstein editors), Chapter...