Selection, drift, and introgression shape MHC polymorphism in lizards
نویسندگان
چکیده
منابع مشابه
Sexual selection drives asymmetric introgression in wall lizards.
Hybridisation is increasingly recognised as an important cause of diversification and adaptation. Here, we show how divergence in male secondary sexual characters between two lineages of the common wall lizard (Podarcis muralis) gives rise to strong asymmetries in male competitive ability and mating success, resulting in asymmetric hybridisation upon secondary contact. Combined with no negative...
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Hybridization and gene introgression can occur frequently between closely related taxa, but appear to be rare phenomena among members of the species-rich West Indian radiation of Anolis lizards. We investigated the pattern and possible mechanism of introgression between two sister species from Puerto Rico, Anolis pulchellus and Anolis krugi, using mitochondrial (ND2) and nuclear (DNAH3, NKTR) D...
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One of the key features of major histocompatibility complex (MHC) genes is the frequent occurrence of trans-species polymorphism, that is 'the passage of allelic lineages from ancestral to descendant species' (Klein et al. 2007). Selectively maintained ancestral polymorphism may, however, be hard to distinguish from introgression of MHC alleles between hybridizing species (Fig. 1). In this issu...
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Stochastic computer simulation is an important method for comparing the evolutionary patterns and processes associated with radically different intervals of time. This paper demonstrates how to simulate the evolution of complex morphologies over geological timescales of millions of generations. The simulations are used to test how various assumptions about microevolutionary parameters and proce...
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The major histocompatibility complex (MHC) forms an integral component of the vertebrate immune response and, due to strong selection pressures, is one of the most polymorphic regions of the entire genome. Despite over 15 years of research, empirical studies offer highly contradictory explanations of the relative roles of different evolutionary forces, selection and genetic drift, acting on MHC...
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ژورنال
عنوان ژورنال: Heredity
سال: 2018
ISSN: 0018-067X,1365-2540
DOI: 10.1038/s41437-018-0146-2