Results 31 to 40 of about 3,392,881 (203)

Patterns of reproductive isolation in toads.

open access: yesPLoS ONE, 2008
Understanding the general features of speciation is an important goal in evolutionary biology, and despite significant progress, several unresolved questions remain.
John H Malone, Brian E Fontenot
doaj   +1 more source

Genetic Divergence between Camellia sinensis and Its Wild Relatives Revealed via Genome-Wide SNPs from RAD Sequencing

open access: yesPLoS ONE, 2016
Tea is one of the most popular beverages across the world and is made exclusively from cultivars of Camellia sinensis. Many wild relatives of the genus Camellia that are closely related to C. sinensis are native to Southwest China.
Hua Yang   +13 more
semanticscholar   +1 more source

Integrating paleoecology and genetics of bird populations in two sky island archipelagos

open access: yesBMC Biology, 2008
Background Genetic tests of paleoecological hypotheses have been rare, partly because recent genetic divergence is difficult to detect and time. According to fossil plant data, continuous woodland in the southwestern USA and northern Mexico became ...
Bowen Bonnie S   +2 more
doaj   +1 more source

Genetic structure, divergence and admixture of Han Chinese, Japanese and Korean populations

open access: yesHereditas, 2018
BackgroundHan Chinese, Japanese and Korean, the three major ethnic groups of East Asia, share many similarities in appearance, language and culture etc., but their genetic relationships, divergence times and subsequent genetic exchanges have not been ...
Yuchen Wang   +3 more
semanticscholar   +1 more source

Genetically Fixed Characters and Evolutionary Divergence [PDF]

open access: yesAmerican Zoologist, 1970
Data from hybridization permit assessment of relationships of the toads (genus Bufo ) which occur on all continents except Australia and permit a crude estimate of the degree of genetic change with time. The evidence indicates that toads have been very conservative with respect to change.
openaire   +2 more sources

Genetic divergence between transposable elements

open access: yesGenetical Research, 1986
SummaryThe probabilities of genetic identity between different members of the same family of transposable elements in a randomly mating host population are determined, under the assumption of statistical equilibrium between neutral mutations, random genetic drift, transposition and unbiased gene conversion. The method allows for variation in numbers of
openaire   +2 more sources

Island biology and morphological divergence of the Skyros wall lizard Podarcis gaigeae: a combined role for local selection and genetic drift on color morph frequency divergence?

open access: yesBMC Evolutionary Biology, 2010
Background Patterns of spatial variation in discrete phenotypic traits can be used to draw inferences about the adaptive significance of traits and evolutionary processes, especially when compared to patterns of neutral genetic variation.
Runemark Anna   +4 more
doaj   +1 more source

Genetic divergence of indigenous pummelo genotypes

open access: yesResearch in Agriculture Livestock and Fisheries, 2016
The genetic divergence was studied in33pummelogenotypes using D2 statistics and principal component analysis at Regional Agricultural Research Station, BARI, Akbarpur, Moulvibazar during 2012 to 2014. The genotypes were grouped into 5 clusters and the maximum number of genotypes was included in cluster IV and V and the minimum number in cluster I.
SN Alam   +4 more
openaire   +2 more sources

Genetic Divergence in Crop Plants: Driving Forces, Analytical Methods, and Breeding Implications

open access: yesNG Agricultural Sciences
Genetic divergence, defined as the accumulation of genetic differences between populations, holds fundamental importance in plant breeding and is crucial for the development of new and improved crop varieties. The factors that promote genetic divergence
Dhanalakshmi, Shashidhara Narayana Naik
doaj   +1 more source

Genetic divergence of tomato ringspot virus

open access: yesArchives of Virology, 2016
Tomato ringspot virus (ToRSV) has been detected in Chile, causing economically important diseases in a wide range of hosts. A ToRSV isolate was obtained from raspberry cv Heritage (Rasp-CL) showing leaf yellowing and stunting. The complete genome of Rasp-CL was sequenced by deep sequencing.
Lucia Rivera   +2 more
openaire   +3 more sources

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