What is responsible for the differences between the sexes in so many animals, from the brilliant plumage of birds of paradise to the antlers on deer? And why are the traits that distinguish the sexes sometimes apparently detrimental to survival? Even when they look more or less alike, why do males and females sometimes behave differently? Questions like these have intrigued scientists and the public alike for many years, and new discoveries are showing us both howwildly variable the natural world is, and how some basic principles can help explain much of that variation. Like natural selection, sexual selection is a process that results from differential representation of genes in successive generations. Under sexual selection, however, the crucialcharacteristics that determine whether an individual reproduces depend on sexual competition, rather than survival ability. This Very Short Introduction considers the history of our understanding of sexual selection, from Darwin''s key insight
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This accessible textbook provides a basic understanding of the general evolutionary principles of organismic animal biology and animal diversity. It integrates parallel themes of body organization and phylogeny to provide an evolutionary journey through...
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The topic of stem cells has a high profile in the media. We''ve made important advances in our scientific understanding, but despite this the clinical applications of stem cells are still in their infancy and most real stem cell therapy carried...
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<b>Very Short Introductions<b>: Brilliant, Sharp, Inspiring </b>In this exploration of the concept of the gene, Jonathan Slack looks at the discovery, nature, and role of genes in both evolution and development. By explaining the nature...
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