Results 31 to 40 of about 151,608 (253)
MODELS OF EVOLUTION OF REPRODUCTIVE ISOLATION [PDF]
ABSTRACT Mathematical models are presented for the evolution of postmating and premating reproductive isolation. In the case of postmating isolation it is assumed that hybrid sterility or inviability is caused by incompatibility of alleles at one or two loci, and evolution of reproductive isolation occurs by random fixation of different ...
M, Nei, T, Maruyama, C I, Wu
openaire +2 more sources
REPRODUCTIVE ISOLATION IN SONORAN DESERT DROSOPHILA [PDF]
Uploaded by Plazi for TaxoDros. We do not have abstracts.
Therese A, Markow +2 more
openaire +6 more sources
Background Hybridization among Louisiana Irises has been well established and the genetic architecture of reproductive isolation is known to affect the potential for and the directionality of introgression between taxa. Here we use co-dominant markers to
Ballerini Evangeline S +7 more
doaj +1 more source
Evolutionarily diverged regulation of X-chromosomal genes as a primal event in mouse reproductive isolation. [PDF]
Improper gene regulation is implicated in reproductive isolation, but its genetic and molecular bases are unknown. We previously reported that a mouse inter-subspecific X chromosome substitution strain shows reproductive isolation characterized by male ...
Ayako Oka +3 more
doaj +1 more source
Genetic Variability of the Mating Recognition Gene in Populations of Brachionus plicatilis
The development of reproductive barriers promotes within-species divergence and is a requisite for speciation to occur. Mate recognition in the rotifer B. plicatilis is mediated through a surface glycoprotein called Mating Recognition Protein (MRP). Here
Ivana Jezkova +3 more
doaj +1 more source
Asymmetric reproductive isolation between two sympatric annual killifish with extremely short lifespans. [PDF]
BACKGROUND: Interspecific reproductive isolation is typically achieved by a combination of intrinsic and extrinsic barriers. Behavioural isolating barriers between sympatric, closely related species are often of primary importance and frequently aided by
Matej Polačik, Martin Reichard
doaj +1 more source
Disentangling the strength and importance of barriers to reproduction that arise between diverging lineages is central to our understanding of species origin and maintenance. To date, the vast majority of studies investigating the importance of different
Tracy M. Misiewicz +2 more
doaj +1 more source
HYBRID ZONES AND REPRODUCTIVE ISOLATION [PDF]
The interpretation of hybrid zones remains one of the most difficult of taxonomic problems, despite the striking advances in systematics of recent decades. Mayr (1963: 496) selected sexual isolation, hybrid fertility, and developmental compatibility as the only criteria that will render possible unequivocal decisions (one species or two) in the case of
openaire +1 more source
Prepollination barriers prevent gene flow between co-occurring bat-pollinated bromeliads in a montane forest [PDF]
Background Reproductive isolation mechanisms in flowering plants are fundamental to preserving species’ evolutionary independence and to enabling the local coexistence of closely related species.
Stephanie Núñez-Hidalgo +1 more
doaj +2 more sources
Neo-Allopatry and Rapid Reproductive Isolation
Over the past 3 centuries, many species have been dispersed beyond their natural geographic limits by humans, but to our knowledge, reproductive isolation has not been demonstrated for such neo-allopatric species. We grew seeds from three species of Centaurea (Centaurea solstitialis, Centaurea calcitrapa, and Centaurea sulphurea) that are native to ...
Montesinos, Daniel +2 more
openaire +4 more sources

