Universality and predictability in molecular quantitative genetics

Universality and predictability in molecular quantitative genetics
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分子定量遗传学的普遍性和可预测性

DOI:
10.1101/000406
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发表时间:
2013
期刊:
bioRxiv
影响因子:
--
通讯作者:
M. Lässig
M. Lässig
中科院分区:
--
文献类型:
--
作者:
Armita Nourmohammad;Torsten Held;M. Lässig

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分子性状,如基因表达水平或蛋白质结合亲和力,越来越容易通过现代高通量技术进行定量测量。这些特征测量分子功能,从进化的角度来看,作为自然选择的目标是重要的。我们回顾了进化理论和实验的最新进展,这些理论和实验有望成为分子性状数量遗传学的基石。我们专注于普遍的进化特征:这些特征在很大程度上独立于一个特征的遗传基础,这通常是至少部分未知的。我们表明,通用的测量可以用来推断选择的数量性状,这决定了它的进化模式的保护或适应。此外,普遍性与跨谱系性状进化的可预测性密切相关。我们认为,普遍性状统计扩展到一系列的细胞尺度,并开辟了定量进化系统生物学的新途径。
Molecular traits, such as gene expression levels or protein binding affinities, are increasingly accessible to quantitative measurement by modern high-throughput techniques. Such traits measure molecular functions and, from an evolutionary point of view, are important as targets of natural selection. We review recent developments in evolutionary theory and experiments that are expected to become building blocks of a quantitative genetics of molecular traits. We focus on universal evolutionary characteristics: these are largely independent of a trait’s genetic basis, which is often at least partially unknown. We show that universal measurements can be used to infer selection on a quantitative trait, which determines its evolutionary mode of conservation or adaptation. Furthermore, universality is closely linked to predictability of trait evolution across lineages. We argue that universal trait statistics extends over a range of cellular scales and opens new avenues of quantitative evolutionary systems biology.
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