Results 31 to 40 of about 54,152 (260)
BMC Genomics, 2012 Background Although sexual reproduction is dominant within eukaryotes, asexual reproduction is widespread and has evolved independently as a derived trait in almost all major taxa. How asexuality evolved in sexual organisms is unclear.
Gallot Aurore +4 more
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On the origin of trisomy 21 Down syndrome [PDF]
, 2008 Background: Down syndrome, characterized by an extra chromosome 21 is the most common genetic cause for congenital malformations and learning disability.
Hultén, Maj A. +6 more
core +2 more sources
PLoS ONE, 2013 The Deleted in Azoospermia gene family encodes three germ cell-specific RNA-binding proteins (DAZ, DAZL and BOLL) that are essential for gametogenesis in diverse species.
Jing He +4 more
doaj +1 more source
Subcellular localization and Egl-mediated transport of telomeric retrotransposon HeT-A ribonucleoprotein particles in the Drosophila germline and early embryogenesis. [PDF]
PLoS ONE, 2018 The study of the telomeric complex in oogenesis and early development is important for understanding the mechanisms which maintain genome integrity. Telomeric transcripts are the key components of the telomeric complex and are essential for regulation of
Maria Kordyukova +6 more
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The dynamic landscape of gene regulation during Bombyx mori oogenesis
BMC Genomics, 2017 Background Oogenesis in the domestic silkworm (Bombyx mori) is a complex process involving previtellogenesis, vitellogenesis and choriogenesis. During this process, follicles show drastic morphological and physiological changes.
Qiang Zhang +4 more
doaj +1 more source
Apoptosis in mouse fetal and neonatal oocytes during meiotic prophase one [PDF]
, 2007 Background The vast majority of oocytes formed in the fetal ovary do not survive beyond birth. Possible reasons for their loss include the elimination of non-viable genetic constitutions arising through meiosis, however, the ...
Ghafari , Fataneh +2 more
core +4 more sources
Advanced Science, 2023 Mammalian oogenesis features reliance on the mRNAs produced and stored during early growth phase. These are essential for producing an oocyte competent to undergo meiotic maturation and embryogenesis later when oocytes are transcriptionally silent.
Hui Li +8 more
doaj +1 more source
An eIF4E-binding protein regulates katanin protein levels in C. elegans embryos. [PDF]
, 2009 In Caenorhabditis elegans, the MEI-1-katanin microtubule-severing complex is required for meiosis, but must be down-regulated during the transition to embryogenesis to prevent defects in mitosis.
DeBella, Leah +4 more
core +2 more sources
PLoS ONE, 2020 Reproduction is highly sensitive to changes in physiology and the external environment. Neuropeptides are evolutionarily conserved signaling molecules that regulate multiple physiological processes.
Tianlu Ma +2 more
doaj +1 more source
eLife, 2022 p53 gene family members in humans and other organisms encode a large number of protein isoforms whose functions are largely undefined. Using Drosophila as a model, we find that a p53B isoform is expressed predominantly in the germline where it ...
Ananya Chakravarti +3 more
doaj +1 more source