Results 51 to 60 of about 28,869 (295)

Functional Reprogramming of Polyploidization in Megakaryocytes [PDF]

open access: yesDevelopmental Cell, 2015
Polyploidization is a natural process that frequently accompanies differentiation; its deregulation is linked to genomic instability and cancer. Despite its relevance, why cells select different polyploidization mechanisms is unknown. Here we report a systematic genetic analysis of endomitosis, a process in which megakaryocytes become polyploid by ...
Trakala M   +8 more
openaire   +2 more sources

Inference of haplotypic phase and missing genotypes in polyploid organisms and variable copy number genomic regions [PDF]

open access: yes, 2008
Background: The power of haplotype-based methods for association studies, identification of regions under selection, and ancestral inference, is well-established for diploid organisms.
Coin, LJM   +15 more
core   +1 more source

Characteristics of cytomixis in the pollen mother cells of green manure crop Sesbania cannabina [PDF]

open access: yesJournal of Central European Agriculture, 2013
Cytomixis has been reported in many plant species, but there is no published report in Sesbania cannabina spp. The cytological stability of any plant is an important consideration in view of its extensive use in genetics and plant breeding programmes ...
Girjesh Kumar, Nitisha Srivastava
doaj  

The causes and consequences of subgenome dominance in hybrids and recent polyploids.

open access: yesNew Phytologist, 2018
Contents Summary 87 I. Introduction 87 II. Evolution in action: subgenome dominance within newly formed hybrids and polyploids 88 III. Summary and future directions 90 Acknowledgements 92 References 92 SUMMARY: The merger of divergent genomes, via ...
Kevin A. Bird   +3 more
semanticscholar   +1 more source

Biological specificity of the fruit woody and arborescent plants of the tropical zone [PDF]

open access: yesСибирский лесной журнал, 2019
Tropical Flora of the Earth contains inexhaustible stock of genetic resources. Review of the main fruit trees and woody plants of this region has been carried out.
E. N. Muratova
doaj   +1 more source

Expression Analysis of TCP Transcription Factor Family in Autopolyploids of Chrysanthemum nankingense

open access: yesFrontiers in Plant Science, 2022
Autopolyploids often exhibit plant characteristics different from their diploid ancestors and are frequently associated with altered genes expression controlling growth and development.
Zhongyu Yu   +13 more
doaj   +1 more source

Polyploids increase overall diversity despite higher turnover than diploids in the Brassicaceae

open access: yesProceedings of the Royal Society B, 2020
Although polyploidy is widespread across the plant Tree of Life, its long-term evolutionary significance is still poorly understood. Here, we examine the effects of polyploidy in explaining the large-scale evolutionary patterns within angiosperms by ...
Cristian Román‐Palacios   +2 more
semanticscholar   +1 more source

Problematic octaploid forms and a new chromosome number in the genus Achillea L., 2n = 126

open access: yesActa Societatis Botanicorum Poloniae, 2014
Among the offspring of a problematic form of Achillea sp., a 2n = 126 seedling which probably arose as the result of fusion of unreduced octo- and hexaploid gametes (72 + 54) was found along with seedlings having an octaploid chromosome number (2n = 72).
Janina Dąbrowska
doaj   +1 more source

A Reappraisal of Polyploidy Events in Grasses (Poaceae) in a Rapidly Changing World

open access: yesBiology, 2022
Around 80% of megaflora species became extinct at the Cretaceous–Paleogene (K–Pg) boundary. Subsequent polyploidy events drove the survival of thousands of plant species and played a significant historical role in the development of the most successful ...
Acga Cheng   +5 more
doaj   +1 more source

The speciation and adaptation of the polyploids: a case study of the Chinese Isoetes L. diploid-polyploid complex

open access: yesBMC Evolutionary Biology, 2020
The Chinese Isoetes L. are distributed in a stairway pattern: diploids in the high altitude and polyploids in the low altitude. The allopolyploid I. sinensis and its diploid parents I. yunguiensis and I.
Xiao-Kang Dai   +3 more
semanticscholar   +1 more source

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