منابع مشابه
The Quantitative Genetics of Phenotypic Robustness
Phenotypic robustness, or canalization, has been extensively investigated both experimentally and theoretically. However, it remains unknown to what extent robustness varies between individuals, and whether factors buffering environmental variation also buffer genetic variation. Here we introduce a quantitative genetic approach to these issues, and apply this approach to data from three species...
متن کاملStatistical Genetics and Evolution of Quantitative Traits
The distribution and heritability of many traits depends on numerous loci in the genome. In general, the astronomical number of possible genotypes makes the system with large numbers of loci difficult to describe. Multilocus evolution, however, greatly simplifies in the limit of weak selection and frequent recombination. In this limit, populations rapidly reach Quasi-Linkage Equilibrium (QLE) i...
متن کاملThe Quantitative Genetics of Phenotypic Error or Uniformity
The ε term is referred to by numerous synonyms in the literature like stochastic noise, biological variance, and error but is more commonly discussed as the inverse (ε−1) using words like uniformity, canalization, robustness, or stability depending upon the research field. In evolutionary theory, canalization is utilized to refer to the idea that selection functions to minimize the error (maxim...
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 کاملComparative quantitative genetics: evolution of the G matrix
Organisms are complex systems comprising interacting characters underlain by shared functional, developmental and genetic processes. Within quantitative genetics (the study of inheritance at the phenotypic level), these relationships are summarized in the additive GENETIC VARIANCE–COVARIANCE MATRIX G (see Glossary). The usefulness of the quantitative genetic approach to long-term evolution depe...
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ژورنال
عنوان ژورنال: Evolution
سال: 1998
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1998.tb01664.x