Results 21 to 30 of about 54,552 (286)

Untangling nucleotide diversity and evolution of the H genome in polyploid Hordeum and Elymus species based on the single copy of nuclear gene DMC1. [PDF]

open access: yesPLoS ONE, 2012
Numerous hybrid and polypoid species are found within the Triticeae. It has been suggested that the H subgenome of allopolyploid Elymus (wheatgrass) species originated from diploid Hordeum (barley) species, but the role of hybridization between polyploid
Dongfa Sun, Genlou Sun
doaj   +1 more source

Organization and expression analysis of 5S and 45S ribosomal DNA clusters in autotetraploid Carassius auratus

open access: yesBMC Ecology and Evolution, 2021
Background Autotetraploid Carassius auratus (4n = 200, RRRR) (abbreviated as 4nRR) is derived from whole genome duplication of Carassius auratus red var. (2n = 100, RR) (abbreviated as RCC).
Chun Zhao   +10 more
doaj   +1 more source

The polyploid continuum and the landscape of polyploid genomic variation. [PDF]

open access: yesAm J Bot
Abstract Polyploid research has traditionally distinguished between autopolyploids and allopolyploids on the basis of evolutionary origins, modes of inheritance, or chromosomal pairing behavior during meiosis. It has long been recognized, however, that a binary classification does not accurately reflect the complexity and diversity ...
Twyford AD   +6 more
europepmc   +2 more sources

Genetic analysis of a major international collection of cultivated apple varieties reveals previously unknown historic heteroploid and inbred relationships [PDF]

open access: yes, 2018
Domesticated apple (Malus x domestica Borkh.) is a major global crop and the genetic diversity held within the pool of cultivated varieties is important for the development of future cultivars.
A Cornille   +57 more
core   +2 more sources

Physio-Anatomical Study of Polyploid Watermelon Grafted by Different Methods

open access: yesAgronomy, 2021
Watermelon is one of the most desirable vegetable crops in the world. Recently, grafting is common in watermelons worldwide, but not all grafting methods are compatible with polyploids. In this study, diploid, triploid, and tetraploid from one watermelon
Mohamed Omar Kaseb   +11 more
doaj   +1 more source

Citron Kinase Deficiency Leads to Chromosomal Instability and TP53-Sensitive Microcephaly [PDF]

open access: yes, 2017
Mutations in citron (CIT), leading to loss or inactivation of the citron kinase protein (CITK), cause primary microcephaly in humans and rodents, associated with cytokinesis failure and apoptosis in neural progenitors.
Alessandra Maria Adelaide, Chiotto   +21 more
core   +3 more sources

Effects of Nano-Silver Exposure on Oxidative Stress, Transcriptome, and Intestinal Microbiota of Procambarus clarkii

open access: yesBiology
There is limited understanding regarding the potential toxicity of nano-silver to crayfish. This study aims to evaluate the histopathological changes, oxidative stress, transcriptomics, and intestinal microbiota changes in different tissues of crayfish ...
Jian Li   +7 more
doaj   +1 more source

Hybridization, polyploidy, and evolutionary transitions between monoecy and dioecy in Bryonia (Cucurbitaceae) [PDF]

open access: yes, 2008
Correns’s 1903 (Berichte der Deutschen Botanischen Gesellschaft 21: 133 – 147) crosses between a monoecious and a dioecious species of Bryonia revealed the simple Mendelian inheritance of dioecy and provided the first instance of an XY sex determination ...
Renner, Susanne S., Volz, Stefanie M.
core   +1 more source

Establishment and Polymorphism Analysis of SNP Markers in the Gynogenic Blunt Snout Bream

open access: yesBiology
The blunt snout bream (Megalobrama amblycephala, BSB) is a freshwater economic fish with Chinese characteristics, and its genetic characteristics have unique value for studying fish evolution.
Ping Wu   +13 more
doaj   +1 more source

Polyploidization and epigenetics [PDF]

open access: yesChinese Science Bulletin, 2011
The occurrence of polyploidy, or whole genome duplication, can result in instantaneous speciation. Because new polyploids are immediately reproductively isolated from their non-polyploid congeners, polyploidization has played an important role in the diversification of flowering plants and some vertebrates.
Li, ZhiHui   +8 more
openaire   +1 more source

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