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Ancient asexuality: No scandals found with novel data.
Bioessays
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Biosciences Institute (Zoology), University of Sao Paulo, Sao Paulo, Brazil.
Earthworm (Oligochaeta, Lumbricidae) intraspecific genetic variation and polyploidy.
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Omsk State Pedagogical University, Omsk, Russia.
Earthworms are known for their intricate systematics and a diverse range of reproduction modes, including outcrossing, self-fertilization, parthenogenesis, and some other modes, which can occasionally coexist in a single species. Moreover, they exhibit considerable intraspecific karyotype diversity, with ploidy levels varying from di- to decaploid, as well as high genetic variation. In some cases, a single species may exhibit significant morphological variation, contain several races of different ploidy, and harbor multiple genetic lineages that display significant divergence in both nuclear and mitochondrial DNA.
View Article and Find Full Text PDFExploring motion using geometric morphometrics in microscopic aquatic invertebrates: 'modes' and movement patterns during feeding in a bdelloid rotifer model species.
Mov Ecol
July 2024
Consiglio Nazionale Delle Ricerche (CNR), Istituto di Ricerca Sulle Acque (IRSA), Corso Tonolli 50, 28922, Verbania Pallanza, Italy.
Background: Movement is a defining aspect of animals, but it is rarely studied using quantitative methods in microscopic invertebrates. Bdelloid rotifers are a cosmopolitan class of aquatic invertebrates of great scientific interest because of their ability to survive in very harsh environment and also because they represent a rare example of an ancient lineage that only includes asexually reproducing species. In this class, Adineta ricciae has become a model species as it is unusually easy to culture.
View Article and Find Full Text PDFFunctional Validation of the Cytochrome P450 Family Gene in .
Biomolecules
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College of Life Science, Jilin Agricultural University, Changchun 130118, China.
Ginseng ( C. A. Meyer) is an ancient and valuable Chinese herbal medicine, and ginsenoside, as the main active ingredient of ginseng, has received wide attention because of its various pharmacological active effects.
View Article and Find Full Text PDFComparative Genomics of Sex, Chromosomes, and Sex Chromosomes in Caenorhabditis elegans and Other Nematodes.
Methods Mol Biol
May 2024
Department for Integrative Evolutionary Biology, Max Planck Institute for Biology, Tübingen, Germany.
The nematode phylum has evolved a remarkable diversity of reproductive modes, including the repeated emergence of asexuality and hermaphroditism across divergent clades. The species-richness and small genome size of nematodes make them ideal systems for investigating the genome-wide causes and consequences of such major transitions. The availability of functional annotations for most Caenorhabditis elegans genes further allows the linking of patterns of gene content evolution with biological processes.
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