Results 211 to 220 of about 151,608 (253)

Pathways and pitfalls: a qualitative study of student experiences in biomedical science education

FEBS Open Bio, EarlyView.
Biomedical science students from underrepresented backgrounds face barriers including financial strain, disrupted laboratory access and cultural exclusion. Peer networks provide vital support when institutional systems are difficult to navigate. To create inclusive learning environments and achieve academic success, educators should blend active, hands‐
Olivia J. Russell, Cassy Ross, Panagiota S. Filippou, Bruno Silvester Lopes, Dominic Gilchrist, Paul Dean, Kamar Ameen‐Ali, Tora K. Smulders‐Srinivasan, Ahmad A. Khundakar   +8 more
wiley   +1 more source

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The origins of reproductive isolation in plants

New Phytologist, 2015
SummaryReproductive isolation in plants occurs through multiple barriers that restrict gene flow between populations, but their origins remain uncertain. Work in the past decade has shown that postpollination barriers, such as the failure to form hybrid seeds or sterility of hybrid offspring, are often less strong than prepollination barriers. Evidence
Loren H Rieseberg, Daniel Ortíz-Barrientos   +1 more
exaly   +6 more sources

QUANTIFYING PATTERNS IN THE EVOLUTION OF REPRODUCTIVE ISOLATION

Evolution; International Journal of Organic Evolution, 2004
We present a likelihood-based statistical method for examining the pattern or rate of evolution of reproductive isolation. The method uses large empirical datasets to estimate, for a given clade, the average duration of two phases in the divergence of populations. The first phase is a lag phase and refers to the period during which lineages diverge but
Tamra C Mendelson, Brian D Inouye, Mark D Rausher   +2 more
exaly   +3 more sources

Reproductive isolation grows on trees

Trends in Ecology & Evolution, 2009
Despite rapid advances in the complementary fields of speciation genetics and molecular phylogenetics, little attention has been devoted to understanding how genetic changes associated with reproductive isolation accumulate across clades of species. We argue that comparative analyses of reproductive isolation QTL (quantitative trait loci) can generate ...
Leonie C, Moyle, Bret A, Payseur
openaire   +2 more sources

Reproductive isolation in Damselflies

Systematic Biology, 1974
Paulson, D. R. (Department of Zoology, University of Washington, Seattle, Washington 98195) 1974. Reproductive Isolation in Damselflies. Syst. Zool. 23:40-49.-Experiments were performed in the field on males of five species and females of ten species of damselflies (Odonata: Zygoptera: Coenagrionidae) to determine the relative importance of visual and ...
openaire   +1 more source

MOLECULAR CORRELATES OF REPRODUCTIVE ISOLATION

Evolution, 2002
Evolution of reproductive isolation as a byproduct of genetic divergence in isolated populations is the dominant (albeit not exclusive) mode of speciation in sexual animals. But little is known about the factors linking speciation to general divergence.
openaire   +2 more sources

Genetics of postzygotic reproductive isolation in plants

Russian Journal of Genetics, 2009
Postzygotic reproductive isolation, based on negative interactions of genes, is a key aspect of divergent speciation in plants and animals. The effect of the interaction manifests as a drastic reduction in fitness of hybrids of the first and subsequent generations, which is expressed as hybrid lethality, weakness or sterility.
A V, Voĭlokov, N D, Tikhenko
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GENETICS OF POSTMATING REPRODUCTIVE ISOLATION IN ANIMALS

Annual Review of Genetics, 1994
INTRODUCTION . . , . , .. . , , . .. , , , .. . . , , , . . . , . , . . . , , , . . . . , . . . . , , . . . . , . . . . . 283 Questions and Models . . . . . . . . . . . .. . . . . . . . . .. .. . . . . .. . . . .. . . . . . . . . . . .. . . 285 Classification of Analyses .. . . . . . . . . . . . . ,. .. . .. . . . . .. . . . . . . . . . . .. . . . . . .
C I, Wu, M F, Palopoli
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Animal personality as a driver of reproductive isolation

Trends in Ecology & Evolution, 2014
Although interest in the ecological and evolutionary implications of animal personality continues to grow, the role that personality plays in speciation has received only modest attention. Here we explore links between personality and speciation, and offer a framework for addressing some of this field's most interesting questions.
Spencer J, Ingley, Jerald B, Johnson
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Genetic Variation and Reproductive Isolation in Partula

Evolution, 1977
It is true that "we know virtually nothing about the genetic changes that occur in species formation" (Lewontin, 1974: 159). Following studies by Hubby and Throckmorton (1965, 1968), surveys of allozyme variation have revealed some of the genetic differences between closely related species (Selander and Johnson, 1973; Avise, 1974).
Michael S, Johnson, Bryan, Clarke, James, Murray   +2 more
openaire   +2 more sources