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Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

- Peter R. Grant
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Peter R. Grant
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To summarize, the particular song a male sings, and the behavioral responses of females to song and morphological signals, are not genetically inherited in a fixed manner but are determined by learning early in life.

Almost nothing is known from hybridization studies about the inheritance of courtship behavior of females, or of their responsiveness to particular male signals.

Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to natural and sexual selection.

Closely related species of birds are also chromosomally similar.

The theory of founder effects does not explain how novel features like plumage traits arise.

Exchange of breeding individuals between two populations tends to homogenize their gene pools.

We observe closely related species in sympatry and infer how they evolved from a common ancestor.

Evidence of epistasis from hybridization studies is more scarce.

Plumage features constitute a major component of courtship signals.

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Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.

Genes that underlie the capacity to receive, use and transmit information are the evolving properties.