Evidence
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A further limitation concerns the mapping from genotype to phenotype: because many genotypes can map to the same phenotype, and the number of genotypes underlying a given phenotype is often strongly biased, traditional methods that treat sequence variation as a direct proxy for phenotypic difference may misrepresent the evolutionary signal they are intended to capture.
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Nevertheless, important progress in this direction has been made through the use of GP maps that can be computationally explored and, more recently, through the development of quantitative approaches to shared generic properties. Among the latter, one of the most striking properties is a strong bias…
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Nevertheless, important progress in this direction has been made through the use of GP maps that can be computationally explored and, more recently, through the development of quantitative approaches to shared generic properties. Among the latter, one of the most striking properties is a strong bias in the number of genotypes mapping to a phenotype. [ 12 , 4 ] This begs the question: Can this bias, which often extends over many orders of magnitude, affect evolutionary outcomes? Indeed, phenotypic bias, among other non-trivial properties of GP maps, does severely affect not only our understanding of how variation arises through random mutations, but also any accurate representation —be it metaphorical or formal— of evolutionary dynamics at large.