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Inter-racial genetic differences in myelofibrosis: a diverse inner-city center analysis.
Leuk Lymphoma
October 2024
Department of Hematology/Oncology, Montefiore Medical Center, The Bronx, NY, USA.
Integrated Discriminant Evaluation of Molecular Genetic Markers and Genetic Diversity Parameters of Endangered Balearic Dog Breeds.
Int J Mol Sci
February 2024
Department of Genetics, Faculty of Veterinary Sciences, University of Córdoba, 14071 Córdoba, Spain.
The genetic diversity analysis of six dog breeds, including Ca de Bestiar (CB), Ca de Bou (CBOU), Podenco Ibicenco (PI), Ca Rater (CR), Ca Mè (CM), and Ca de Conills (CC), reveals insightful findings. CB showcases the highest mean number of alleles (6.17) and heterozygosity values, with significant deviations from Hardy-Weinberg equilibrium (HWE) observed in five markers, indicating high intra-racial genetic diversity (average observed heterozygosity (H) = 0.
View Article and Find Full Text PDFNatural male hybrid common shrews with a very long chromosomal multivalent at meiosis appear not to be completely sterile.
J Exp Zool B Mol Dev Evol
January 2024
Laboratory of Population Ecology, A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia.
Among 36 known chromosomal hybrid zones of the common shrew Sorex araneus, the Moscow-Seliger hybrid zone is of special interest because inter-racial complex heterozygotes (F hybrids) produce the longest meiotic configuration, consisting of 11 chromosomes with monobrachial homology (undecavalent or chain-of-eleven: CXI). Different studies suggest that such a multivalent may negatively affect meiotic progression and in general should significantly reduce fertility of hybrids. In this work, by immunocytochemical and electron microscopy methods, we investigated for the first time chromosome synapsis, recombination and meiotic silencing in pachytene spermatocytes of natural inter-racial heterozygous shrew males carrying CXI configurations.
View Article and Find Full Text PDFCross-cultural differences in visuo-spatial processing and the culture-fairness of visuo-spatial intelligence tests: an integrative review and a model for matrices tasks.
Cogn Res Princ Implic
February 2022
LP3C, University of Rennes, Campus Villejean, Place du Recteur Henri Le Moal, CS 24307, 35043, Rennes, France.
Visuo-spatial reasoning tests, such as Raven's matrices, Cattell's culture-fair test, or various subtests of the Wechsler scales, are frequently used to estimate intelligence scores in the context of inter-racial comparisons. This has led to several high-profile works claiming that certain ethnic groups have lower intelligence than others, presumably due to genetic inferiority. This logic is predicated on the assumption that such visuo-spatial tests, because they are non-verbal, must be culture-fair: that their solution process does not significantly draw on factors that vary from one culture to the next.
View Article and Find Full Text PDFMolecular exploration of paediatric intracranial germinomas from multi-ethnic Singapore.
BMC Neurol
November 2020
Neurosurgical Service, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, 229899, Singapore.
Background: Germinomas (IG) account for up to 50% of all intracranial germ cell tumours. These tumours are reputed to be more prevalent in Oriental populations in comparison to Western cohorts. Biological characteristics of IG in other ethnic groups are unknown.
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