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"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."
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Exlpore more Population quotes
"I have just joined the Board of the Population Institute because I am convinced that early stabilization of the world's population is important for the attainment of this objective."
"Do not compute the totality of your poultry population until all the manifestations of incubation have been entirely completed."
"Our population is headed for a stable plateau, which means an aging population."
"We are 5 percent of the global population and consume a third of the total resources - on some level we should all feel guilty relative to the world."
"Licences to have babies incidentally is something that I got in trouble for some years ago for suggesting even in Canada that this might be necessary at some point, at least some restriction on the right to have a child."
"The population forecast for the United States in 1970 is 170 million. The population forecast for Russia alone in 1970 is 251 million. The implications are clear."
"The optimum population is, then, less than the maximum."
"You wouldn't believe how the town was named for me. I was met by the whole population, headed by the mayor."
"Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio."
"Three-quarters of the world's population doesn't have enough to eat!"
Explore more quotes by Peter R. Grant
"The independent role of morphology in mate choice is revealed by the rare instances where the usual association between song and morphology is disrupted."
"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."
"The theory of founder effects does not explain how novel features like plumage traits arise."
"Genes that underlie the capacity to receive, use and transmit information are the evolving properties."
"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."
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