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.
More Quotes from Peter R. Grant:
The process of speciation is completed with the cessation of genetic exchange.Peter R. Grant
The theory of founder effects does not explain how novel features like plumage traits arise.
Peter R. Grant
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
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
Closely related species of birds are also chromosomally similar.
Peter R. Grant
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
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Based on Topics: Birds QuotesI say to you that the price of liberty is and always has been blood, human blood, and if our liberties are lost, we shall never regain them except at the price of blood. They must not be lost.
J. Reuben Clark
Most of the slaves, who were thus unconditionally freed, returned without any solicitation to their former masters, to serve them, at stated wages; as free men. The work, which they now did, was found to better done than before.
Thomas Clarkson
If you fell down yesterday, stand up today.
H. G. Wells