منابع مشابه
Quantitative traits and diversification.
Quantitative traits have long been hypothesized to affect speciation and extinction rates. For example, smaller body size or increased specialization may be associated with increased rates of diversification. Here, I present a phylogenetic likelihood-based method (quantitative state speciation and extinction [QuaSSE]) that can be used to test such hypotheses using extant character distributions...
متن کاملQuantitative Genetics and Quantitative Traits
Introduction In the chapter on Mendel and Morgan, we saw how the transmission of genes from one generation to another follows precise mathematical formula. The traits discussed in that chapter, however, were discrete traits—peas are either yellow or green, someone either has a disorder or does not have the disorder. But many behavioral traits are not like these clear-cut, have-it-or-don’t-have-...
متن کاملContingent predictability in evolution: key traits and diversification.
Key innovations have often been invoked to explain the exceptional diversification of particular groups. However, there are few convincing examples of traits that are repeatedly and consistently associated with increased diversification. The paucity of such cases may reflect the contingent nature of the diversifying effect of key traits. These contingencies can be viewed as statistical interact...
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هدف از این تحقیق یافتن ارتباط بین نحوه نگرش زبان آموزان به موفقیت و شکستشان و نوع شخصیت آنها است. 216 زبان آموز، 111 پسر و 105 دختر، در سطح متوسط که در آموزشگاه زبان انگلیسی شکوه مشغول به تحصیل بودند در این پژوهش شرکت کرده اند. شرکت کننده ها دو پرسشنامه neo-ffi و atfll را تکمیل کرده اند. نتیجه نشان داد که: احساسات با توافق پذیری و وظیفه شناسی ارتباط مثبت و با روان نژندی ارتباط منفی دارد. تصور ا...
15 صفحه اولFamiliality of Quantitative Autism Traits
Background: Autistic traits exist along a continuum that extends into social functioning in the general population, and they aggregate in the family members of children with autism spectrum disorder (ASD). Quantitative measures are therefore essential when investigating the patterns of familiality of these traits. Prior studies have suggested differential inheritance patterns of autistic traits...
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ژورنال
عنوان ژورنال: Systematic Biology
سال: 2010
ISSN: 1076-836X,1063-5157
DOI: 10.1093/sysbio/syq053