Reaction norm functions and QTL--environment interactions for flowering time in Arabidopsis thaliana

Article Abstract:

Plant traits are often phenotypically elastic as they respond to resource levels that vary gradually from one environment to another. Rosette leaf number and flowering data have been measured in recombinant inbred lines of Arabidopsis thaliana grown in continuously varying light intensities. Research data show that genetic variation exists among the recombinant inbred lines for parameters of the reaction norm functions. Underlying quantitative trait loci (QTLs) that affected shape of the reaction norm functions have been mapped.

Genetic recombination, Genetic polymorphisms, Flowers

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New perspectives on mate choice and the MHC

Article Abstract:

Mouse studies, and those of some other vertebrates, have shown that mate choice decisions may be based on individual genotype at the major histocompatibility complex (MHC). That would make sense, given the importance of immunocompetence in some sexual selection theories. Genetic background, sex, and early life experience can be factors in mating preference and both strength and direction of MHC-based mating can vary.

Histocompatibility

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New perspectives on mate choice and the MHC

Article Abstract:

Studies on mice have shown that mate choice can be based on individual genotype at the major histocompatibility complex (MHC). That is in agreement with importance of immunocompetence in some theories of sexual selection. In other vertebrate species it seems there is a general preference for MHC-dissimilar mates.

Major histocompatibility complex, Immunogenetics

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