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2 edition of genetic basis of mating system differences in Mimulus (Scrophulariaceae) found in the catalog.

genetic basis of mating system differences in Mimulus (Scrophulariaceae)

Jing-Zhong Lin

genetic basis of mating system differences in Mimulus (Scrophulariaceae)

by Jing-Zhong Lin

  • 171 Want to read
  • 38 Currently reading

Published .
Written in English


The Physical Object
Pagination184 leaves.
Number of Pages184
ID Numbers
Open LibraryOL19527443M
ISBN 100612190153

A mating system-explicit model of population growth in M. ringens is developed, and shows that variation in competition leads to differences in inbreeding depression in important fitness components, ultimately influencing cumulative estimates. Speciation - 1 EXPLORING GENETICS OF ADAPTATION AND SPECIATION BY COMPARING MIMULUS WILDFLOWER SPECIES Lab 12 Part I 1. Which, if any, of the measured traits involved in pollination show simple 1- or 2-locus Mendelian inheritance?Which traits seem to be true quantitative, or complex traits, with many loci contributing to their variation in the F 2? .

All known organisms use genetic information to produce protein molecules via the same genetic code. This finding strongly supports the hypothesis that _____. there's only one possible way to encode information in a macromolecule all organisms are descended from one or a few common ancestors the genetic code readily evolves by natural selection. the differences in migratory behavior between populations are influenced by genetic differences among the populations you spot four female deer and a single male deer. If this reflects the mating system of this species, it would be an example of _____. polygyny. One way to determine whether or not food preferences have a genetic basis is to.

genetic basis of local adaptation and phenotypic plasticity. Additionally, the recombination of the parental genomes increases genetic variation and facilitates QTL detection. Selective sweep: The rapid rise to fixation (allele frequency = 1) of a beneficial allele reduces genetic variation at File Size: KB. Evolution of genetic (co)variances (the G‐matrix) fundamentally influences multitrait divergence. Here, we isolated the contribution of two chromosomal quantitative trait loci (QTLs), a meiotic drive locus and a polymorphic inversion, to the overall G‐matrix for a suite of floral, phenological and male fitness traits in a population of Mimulus by:


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Genetic basis of mating system differences in Mimulus (Scrophulariaceae) by Jing-Zhong Lin Download PDF EPUB FB2

The genetic basis of species differences provides insight into the mode and tempo of phenotypic divergence. We investigate the genetic basis of floral differences between two closely related plant taxa with highly divergent mating systems, Mimulus guttatus (large-flowered outcrosser) and M.

nasutus (small-flowered selfer).Cited by: Study system. Mimulus guttatus, the common monkey flower (section Simiolus, Phrymaceae), is a widespread species with a native range extending across western North America (Vickery ).The species is self-compatible and predominantly outcrossing (Ritland ), with populations that are fully tions demonstrate marked differences in many Cited by: STUDY SYSTEM.

The yellow monkeyflowers (Phrymaceae, formerly Scrophulariaceae: Beardsley and Olmstead ) are a leading model system for studies of ecological genomics and the genetic basis of reproductive isolation (Wu et al.

).Taxa within the M. guttatus species complex are ecologically and morphologically diverse but broadly interfertile (Vickery Cited by: PDF | To study the genetic basis of phenotypic changes in floral characters associated with mating system divergence in the yellow monkeyflowers | Find.

To study the genetic basis of phenotypic changes in floral characters associated with mating system divergence in the yellow monkeyflowers (Mimulus, section. Study system. Mimulus guttatus, the common monkey flower (section Simiolus, Phrymaceae), is a widespread species with a native range extending across western North America (Vickery ).The species is self‐compatible and predominantly outcrossing (Ritland ), with populations that are fully tions demonstrate marked differences in many.

A mating system is a way in which a group is structured in relation to sexual behaviour. The precise meaning depends upon the context. With respect to animals, the term describes which males and females mate under which circumstances. Recognised systems include monogamy, polygamy (which includes polygyny, polyandry, and polygynandry), and promiscuity, all of.

The genetic basis of the mating system—that is, the number of loci and levels of dominance—has been shown to affect the evolutionary outcome of selection in some models of mating system evolution (Charlesworth and Charlesworth ; Latta and Ritland ). For instance, LattaandRitland () showed that, under some conditions, mixed mating.

In this study, we investigate the genetic architecture of divergence in flowering time, mating system-related traits, and leaf shape between Mimulus laciniatus and a sympatric population of its close relative M.

guttatus. These three traits are probably involved in M. laciniatus' adaptation to a dry, exposed granite outcrop environment. The genus Mimulus is a particularly good subject for studies of mating system evolution and inbreeding de- pression.

Mating systems in the genus range from highly selfing to highly outcrossing (Ritland and Ritland, ). Phylogenetic data suggest that selfing has evolved from outcrossing populations more than once (Fenster and Rit- land, ). In particular, closely related species of Mimulus with different mating systems and floral size are observed to differ in their magnitude of inbreeding depression such that the more inbreeding.

Reproductive Systems and Evolution in Vascular Plants KENT E. HOLSINGER Differences in the frequency with which offspring are produced asexually, through self-fertilization and through sexual outcrossing, are a predominant influence on the genetic structure of plant populations.

The optimal allocation to sexual and vegetative reproduction as well as the optimal values of other life-history characteristics such as phenology, growth and mating system are likely to depend on the life-cycle of the organism.

I tested whether plants of Mimulus guttatus originating from temporarily wet populations where the species has an enforced annual life-cycle have Cited by: the genetic architecture of these traits provides new evo-lutionary and mechanistic insight into how multivariate ecotypic differences are maintained by selection in heter-ogeneous environments.

Methods Study system Mimulus guttatus, the common monkey flower (section Simiolus, Phrymaceae), is a widespread species with a. These results suggest that the genetic basis of fixed differences in flower color may be predictable, but that for segregating variation is not. Citation: Wu CA, Streisfeld MA, Nutter LI, Cross KA () The Genetic Basis of a Rare Flower Color Polymorphism in Mimulus lewisii Provides Insight into the Repeatability of Evolution.

More recently, QTL mapping has been employed to gain insight into the genetic basis of mating system evolution. B radshaw et al. () used QTL mapping to investigate the differences between two species of Mimulus, one bee Cited by: Arabidopsis, Mimulus and tomato have emerged as model plants in researching genetic and molecular basis of differences in mating systems.

Variations in floral traits and loss of self-incompatibility have been associated with mating system differences in crops. Genomics research has advanced considerably, both in model and crop plants, which may provide Cited by: To answer this question I investigated the genetic architecture and adaptive significance of differences in flowering time, mating system, and leaf shape between M.

laciniatus and M. guttatus using combination of QTL mapping with next gen sequencing and reciprocal transplants with hybrid individuals in the field.

This is in accord with the suggested genetic basis of Vickery (), who observed a wide variation in seed set within populations of M.

guttatus complex and suggested a genetic basis for this variation. The genetic basis expressed itself as a general size relationship in which tall, vigorous plants with large flowers produced more pollen and.

• Premise of the study: The mating system is an important component of the complex set of reproductive isolation barriers causing plant speciation.

Cited by:. First genetic evidence of ongoing mating between 2 distinct species of guenon monkeys Ap A researcher from Florida Atlantic University is the first to document that two genetically distinct species of guenon monkeys inhabiting Gombe National Park in Tanzania, Africa, have been successfully mating and producing hybrid.Eukaryote hybrid genomes result from interspecific hybridization, where closely related species mate and produce offspring with admixed advent of large-scale genomic sequencing has shown that hybridization is common, and that it may represent an important source of novel gh most interspecific hybrids are sterile or less fit than their .Mating System Evolution.

In the past we have addressed the role of inbreeding depression and its genetic basis in the evolution of plant mating systems in the model system, Mimulus.

We have shown that inbreeding depression for both the selfing, Mimulus micranthus, and mixed-mating taxa, Mimulus guttatu, is dominance based. Additionally maternal.