Peter R. Grant Quotes

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

Nothing, Almost, Behavior

Closely related species of birds are also chromosomally similar.
Peter R. Grant

Birds, Related, Species

Evidence of epistasis from hybridization studies is more scarce.
Peter R. Grant

Studies, Evidence, Scarce

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

Two, Between, Breeding

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

Capacity, Evolving, Genes

Islands are known to differ in the food supply available to ground finches, mainly seeds.
Peter R. Grant

Food, Known, Ground

Males transmit signals in courtship through behavioral displays.
Peter R. Grant

Through, Courtship, Males

Plumage features constitute a major component of courtship signals.
Peter R. Grant

Courtship, Major, Component

Species can be recognized by their morphological characteristics and songs.
Peter R. Grant

Songs, Recognized, Species

The process of speciation is completed with the cessation of genetic exchange.
Peter R. Grant

Process, Exchange, Genetic

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

Theory, Novel, Explain

Thus mating of females was strictly along the lines of paternal song.
Peter R. Grant

Song, Along, Lines

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

Common, Observe, Related

The divergence of songs in the new population away from those in the progenitor population would only be prevented if these processes were balanced by repeated immigration and subsequent breeding: song flow.
Peter R. Grant

Away, Song, Songs

The independent role of morphology in mate choice is revealed by the rare instances where the usual association between song and morphology is disrupted.
Peter R. Grant

Between, Choice, Song

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.
Peter R. Grant

Bird, Natural, Adult

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.
Peter R. Grant

Life, Learning, Song

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Biography

Nationality: American

Type: Scientist

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