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| Sexual selection of birds was further examined in Darwin's, Descent of Man |
The Origin of Species famously proposed that the diversity of species we observe in the world has been derived from ancestral species, now extinct, that differed from current forms of life. This idea of the “mutability” of species had been brewing among naturalists in Europe for decades at the time Darwin published his book. He turned the somewhat ill-defined notion of mutability into a science by proposing how it could happen through natural selection, a mechanism that would act automatically as a consequence of simple and observable features of nature. A century and a half of research since publication of the Origin has abundantly confirmed its central claims. The force of natural selection on populations has been observed and measured often, and even the natural formation of new species in historical times has been documented (it doesn’t always take millions of years!). Darwin’s ideas still form a core to evolutionary biology, but, following the blossoming of genetics in the 20th century, and the revolution provided by molecular genetics in this century, we are now aware of a richness and complexity to evolution far beyond what Darwin could have known.
Biologists still read Origin of Species, but the book’s influence has extended well beyond biology and even well beyond science. Its most important consequence has been on our conception of our own place in nature. Although Darwin gave only the slimmest allusion to humankind in the book, the implication that we had an origin like that of other species, proceeding from natural causes as a part of nature, was immediately apparent to readers in 1859, and to readers since. This has not been a comfortable thought for everyone. With our civilisation now facing challenges from climate disruption, it might prove to be a thought we need to embrace all the more.
You can see Darwin’s privileged education and social origins in his command of the language in Origin of Species: it’s a good book, easily read and elegant in a Victorian way. For anyone who wants to be acquainted with the ideas of the past that have shaped our world today, it is worth dipping into, or reading entirely.
Associate Professor Martin Burd completed his PhD at Princeton University. His main area of research focus is cvolutionary ecology. As an Evolutionary Ecologist, Martin investigates life-history evolution, behaviour, and reproduction in a variety of plants and animals.

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