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Leptotene stage information


The leptotene stage, also known as leptonema, is the first of five substages of prophase I during meiosis, the specialized cell division that reduces the chromosome number by half to produce haploid gametes in sexually reproducing organisms.

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Leptotene stage

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The leptotene stage, also known as leptonema, is the first of five substages of prophase I during meiosis, the specialized cell division that reduces...

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Meiosis

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The first stage of prophase I is the leptotene stage, also known as leptonema, from Greek words meaning "thin threads".: 27  In this stage of prophase...

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Zygotene

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chromosome number by half to produce haploid gametes. It follows the Leptotene stage. The key event during zygotene is the completion of synapsis between...

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Chromomere

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identity for each homologous pairs. They appear as dense granules during leptotene stage There are more than 2000 chromomeres on 20 chromosomes of maize. Chromomeres...

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Prophase

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quickly complete meiosis I prior to ovulation. In the first stage of prophase I, leptotene (from the Greek for "delicate"), chromosomes begin to condense...

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Pachytene

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mechanism of DNA repair acting during meiosis. From the leptotene to early pachytene stages of meiosis exogenous damage triggered the massive presence...

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Oogenesis

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whereas DNA repair is not detectable in the pre-dictyate (leptotene, zygotene and pachytene) stages of meiosis. For those primary oocytes that continue to...

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Chromosomal crossover

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during each individual stage of meiosis, and chiasma frequency was measured. Irradiation during the leptotene-zygotene stages of meiosis (that is, prior...

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Germ cell

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diplotene) stage of meiosis actively repairs DNA damage, whereas DNA repair was not detected in the pre-dictyate (leptotene, zygotene and pachytene) stages of...

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Spermatocyte

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meiosis initiation; however, they cannot complete the process. Mutations in leptotene spermatocytes can result in premature chromosome condensation. Mutations...

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Melanoplus femurrubrum

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X-rays during individual stages of meiosis, and chiasma frequency was measured. Irradiation during the leptotene-zygotene stages of meiosis (that is, prior...

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FANCD2

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expressed in spermatogonia, pre-leptotene spermatocytes, and in spermatocytes in the leptotene, zygotene and early pachytene stages of meiosis. In synaptonemal...

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Histone acetylation and deacetylation

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involved in the expansion of H2AX phosphorylation during the leptotene to pachytene stages of meiosis. HAT domains for this family are approximately 250...

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Desert locust

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early stages of meiosis (leptotene-early zygotene stages) caused a significant increase in chiasmata frequency when scored at the later stages (diplotene-diakinesis...

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Meiotic recombination checkpoint

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condensation of chromosomes. Even though the initial homolog paring in early leptotene is just random interactions, the further progression into presynaptic...

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Fanconi anemia

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spermatogonia, preleptotene spermatocytes, and spermatocytes in the meiotic stages of leptotene, zygotene and early pachytene are enriched for FANC proteins. This...

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Eyprepocnemis plorans

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autosomal chromosomes are transcriptionally active during the leptotene to zygotene stages of meiosis, whereas the X chromosome is inactive throughout meiosis...

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FANCG

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preleptotene spermatocytes and spermatocytes in the leptotene, zygotene and early pachytene stages of meiosis. Loss of FANCG causes neural progenitor apoptosis...

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