Comparative linkage maps suggest that fission, not polyploidy, underlies near-doubling of chromosome number within monkeyflowers (Mimulus; Phrymaceae)
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چکیده
منابع مشابه
Components of reproductive isolation between the monkeyflowers Mimulus lewisii and M. cardinalis (Phrymaceae).
Evolutionists have long recognized the role of reproductive isolation in speciation, but the relative contributions of different reproductive barriers are poorly understood. We examined the nature of isolation between Mimulus lewisii and M. cardinalis, sister species of monkeyflowers. Studied reproductive barriers include: ecogeographic isolation; pollinator isolation (pollinator fidelity in a ...
متن کاملNiche and range size patterns suggest that speciation begins in small, ecologically diverged populations in North American monkeyflowers (Mimulus spp.).
Closely related species (e.g., sister taxa) often occupy very different ecological niches and can exhibit large differences in geographic distributions despite their shared evolutionary history. Budding speciation is one process that may partially explain how differences in niche and distribution characteristics may rapidly evolve. Budding speciation is the process through which new species for...
متن کاملHummingbird color preference within a natural hybrid population of Mimulus aurantiacus (Phrymaceae)
Hummingbird flowers are typically red in color but the reasons for this are not well understood. Relatively few studies have examined hummingbird flower color preferences under natural conditions in which flower color varies within a species. We recorded hummingbird visitation rates to flowers that vary in color from yellow to red in a natural hybrid population between redand yellow-flowered Mi...
متن کاملLinkage Variation and Chromosome Maps.
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متن کاملPatterns of evolution in western North American Mimulus (Phrymaceae).
A well-supported phylogeny is presented from both chloroplast DNA (the trnL/F region) and two regions of nuclear rDNA (ITS [internal transcribed spacer] and ETS [external transcribed spacer]) with nearly complete sampling for Mimulus (Phrymaceae) in western North America. Three separate genera are derived from within the clade that contains all the Mimulus species in western North America. The ...
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ژورنال
عنوان ژورنال: Heredity
سال: 2014
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.2013.143