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Pages 183-186

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From page 183...
... in Chapter 10, Francesca Frentiu and others associated with Adriana Briscoe's laboratory delve deeper into the molecular basis of vision by discussing the comparative evolution of genes and proteins underlying color-vision phenotypes in primates and butterflies. The research summarized by these authors demonstrates some remark able parallels in how particular amino acid sites in photopigments can be involved in color perception in both insects and mammals.
From page 184...
... in other words, does the evolution of a phenotype that is adaptive to a particular environment necessitate deterioration in other traits? if so, what natural selection can achieve via the adaptive process would inevitably be constrained by such fitness trade-offs.
From page 185...
... These authors advance fascinating mechanistic scenarios for the evolutionary origins of these peculiar devices, and for subsequent evolutionary alterations in horn shapes, allometries, body locations, and patterns of sexual dimorphism. This volume then concludes with an essay by eugenie scott and nicholas Matzke on the history, philosophy, and societal impact of a reli gious movement known as intelligent Design, and its sharp contrast with scientific explanations for the appearance of biological design that results inevitably from natural selection.


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