Results 21 to 30 of about 230,060 (184)

Polyploidy breaks speciation barriers in Australian burrowing frogs Neobatrachus [PDF]

open access: yes, 2020
Polyploidy has played an important role in evolution across the tree of life but it is still unclear how polyploid lineages may persist after their initial formation.
Booker, William   +11 more
core   +4 more sources

Critical mutation rate has an exponential dependence on population size in haploid and diploid populations [PDF]

open access: yes, 2013
Understanding the effect of population size on the key parameters of evolution is particularly important for populations nearing extinction. There are evolutionary pressures to evolve sequences that are both fit and robust.
Aston, E, Channon, A, Day, C, Knight, CG
core   +5 more sources

DIPLOID VERSUS HAPLOID ORGANISMS [PDF]

open access: yesInternational Journal of Modern Physics C, 2001
Using a bit string model, we show that asexual reproduction for diploids is more efficient than for haploids: it improves genetic material producing new individuals with less deleterious mutations. We also see that in a system where competition is present, diploids dominate, even though we consider some dominant loci.
Ticona, Armando   +1 more
openaire   +2 more sources

Exploring the Role of Endophytes in Cannabis sativa L. Polyploidy and Agricultural Trait Improvement

open access: yesInternational Journal of Plant Biology
Here, we examine the effects of ploidy variation in Cannabis sativa L. cell lines on the plant host genotype-associated microbiome. The endophytic microbiome has a protocooperative role in improving plant health and productivity and represents an ...
Ankita Srivastava   +2 more
doaj   +1 more source

Agro-Morphological and Cytogenetic Characterization of Colchicine-Induced Tetraploid Plants of Polemonium caeruleum L. (Polemoniaceae)

open access: yesPlants, 2022
Polemonium caeruleum L. (Polemoniaceae) is a valuable medicinal herb with a wide spectrum of biological activities. Under natural conditions, the productivity of this species is rather low.
Tatiana E. Samatadze   +9 more
doaj   +1 more source

Chenopodium ucrainicum (Chenopodiaceae / Amaranthaceae sensu APG), a new diploid species: a morphological description and pictorial guide

open access: yesUkrainian Botanical Journal, 2020
A morphological description is provided for Chenopodium ucrainicum Mosyakin & Mandák (Chenopodiaceae / Amaranthaceae sensu APG), a new species allied to C. suecicum and C. ficifolium.
Mosyakin S.L., Mandák B.
doaj   +1 more source

PCR-SSCP: a method to fingerprinting sequence variability in plant gene pool using the Iranian wild diploid Triticum gene pool as a case study [PDF]

open access: yesJournal of Cell and Molecular Research, 2014
As a case study, the genotypic polymorphism of the Iranian material of diploid Triticum was screened based on internal transcribed spacer 2 (ITS2) of the ribosomal DNA (rDNA) using single strand conformation polymorphism (SSCP) analysis. This is a simple
Fatemeh Nasernakhaei   +3 more
doaj   +1 more source

Chromosome numbers in some alien plant species of Novosibirsk Region: post II

open access: yesTurczaninowia, 2021
Chromosome numbers (2n) for 12 alien species (Apiaceae, Asteraceae, Brassicaceae, Campanulaceae, Fabaceae, Lamiaceae, Malvaceae, Onagraceae, Poaceae, Polygonaceae) from the Novosibirsk Region are given.
Елена Юрьевна Зыкова   +1 more
doaj   +1 more source

Micronucleus occurrence in diploid and triploid rainbow trout (Oncorhynchus mykiss Walbaum)

open access: yesVeterinární Medicína, 2003
The aim of the study was to observe the influence of different ploidy levels in fish on micronucleus occur­rence. Twenty minutes after fertilization, one group of rainbow trout eggs was exposed to water temperatures of 26°C in duration of 20 minutes to ...
I. Strunjak-Perovic   +2 more
doaj   +1 more source

Asexual and sexual replication in sporulating organisms

open access: yes, 2006
This paper develops models describing asexual and sexual replication in sporulating organisms. Replication via sporulation is the replication strategy for all multicellular life, and may even be observed in unicellular life (such as with budding yeast ...
Bohyun Lee   +16 more
core   +1 more source

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