Results 41 to 50 of about 11,571 (204)
Recombination and the evolution of diploidy. [PDF]
Genetics, 1992 Abstract With two copies of every gene, a diploid organism is able to mask recessive deleterious mutations. In this paper we present the analysis of a two-locus model designed to determine when the masking of deleterious alleles favors the evolution of a dominant diploid phase in organisms that alternate between haploid and diploid ...
S P, Otto, D B, Goldstein
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G3: Genes, Genomes, Genetics, 2018 The haplodiploid system of sex determination of Hymenoptera acts as an exaptation for species to evolve novel forms of asexual reproduction including thelytoky (clonal offspring of the mother). During normal reproduction in Hymenoptera, three of the four
Benjamin P. Oldroyd +7 more
doaj +1 more source
A century of theories of balancing selection
Biological Reviews, EarlyView.ABSTRACT Traits that affect organismal fitness are often highly genetically variable. This genetic variation is vital for populations to adapt to their environments, but it is also surprising given that nature – after all – ‘selects’ the best genotypes at the expense of those that fall short.
Filip Ruzicka +10 more
wiley +1 more source
Parthenocarpy and Self-Incompatibility in Mandarins
Agronomy, 2021 Citrus reproductive biology is complex. One of its characteristic features is parthenocarpy that enables seedless fruit production. Citrus parthenocarpy and self-incompatibility knowledge is only partial and sometimes discrepant.
Rafael Montalt +4 more
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Effects of an Unusual Poison Identify a Lifespan Role for Topoisomerase 2 in Saccharomyces Cerevisiae [PDF]
, 2017 A progressive loss of genome maintenance has been implicated as both a cause and consequence of aging. Here we present evidence supporting the hypothesis that an age-associated decay in genome maintenance promotes aging in Saccharomyces cerevisiae (yeast)
Baxter, Bonnie +13 more
core +2 more sources
Autopolyploidization‐Induced Chromatin Remodeling Regulates Leaf Size Variation in Brassica rapa
Advanced Science, Volume 13, Issue 9, 13 February 2026.This study demonstrates that monoploid, diploid, and autotetraploid Brassica rapa lines derived from the same genome exhibit distinct leaf morphology. Ploidy changes remodel chromatin accessibility and histone modifications to regulate gene expression, while key transcription factors BrGRF13 and BrARF11 control leaf size and polarity, driving ...
Haoyuan Dong +17 more
wiley +1 more source
Current advances in haploid stem cells
Protein & Cell, 2019 Diploidy is the typical genomic mode in all mammals. Haploid stem cells are artificial cell lines experimentally derived in vitro in the form of different types of stem cells, which combine the characteristics of haploidy with a broad developmental ...
Tongtong Cui, Zhikun Li, Qi Zhou, Wei Li
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Molecular Ecology, Volume 35, Issue 3, February 2026.ABSTRACT Understanding gene flow between ploidy levels in polyploid complexes is essential for species delimitation and conservation. This study explores evolutionary dynamics in the polyploid complex Thymus sect. Mastichina (Lamiaceae), comprising three taxa: T. mastichina subsp. mastichina, T. mastichina subsp.
Francisco José García‐Cárdenas +7 more
wiley +1 more source
Molecular and immunohistochemical characteristics of complete hydatidiform moles
Balkan Journal of Medical Genetics, 2017 Molar pregnancy is a gestational trophoblastic disease that belongs to the category of precancerous lesions. On the other end of the spectrum are gestational trophoblastic neoplasms such as invasive mole, choriocarcinoma, placental site trophoblastic ...
Kubelka-Sabit KB +6 more
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Experimental Evolution Reveals Interplay between Sch9 and Polyploid Stability in Yeast. [PDF]
PLoS Genetics, 2016 Polyploidization has crucial impacts on the evolution of different eukaryotic lineages including fungi, plants and animals. Recent genome data suggest that, for many polyploidization events, all duplicated chromosomes are maintained and genome ...
Yi-Jin Lu, Krishna B S Swamy, Jun-Yi Leu
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