A classic example of natural selection at work is the origin of giraffes’ long necks. The ancestors of modern giraffes were animals similar to deer or antelope, with necks of ordinary length.

Sustainable use management of wildlife often harms the very animals that natural selection would otherwise protect. Among elephants, for example, herds normally are matriarchies, usually led by the ...

Examples of relatively asocial animals include mosquitoes and polar ... what some have called the “problem of altruism.” Natural selection operates against individuals who reduce their own ...

This is because natural selection acts to increase the prevalence of highly advantageous alleles, over time generating common resistance alleles of especially strong effect. For example ...

unpredictable fray of natural selection. With two partners combining varied genes, a species has more flexibility to adapt to changing environments. There are, however, rare examples of asexual ...

Q: Tell us about this "dangerous idea" of Darwin's. A: I think Darwin's idea of natural selection is the best idea anybody ever had, ahead of Newton, ahead of Einstein. What it does is it promises ...

This is a key part of what we call natural selection ... They could then be given examples of organisms from these habitats and asked to discuss in groups how the animals are suited to those ...

Charles Darwin close Charles DarwinAn English naturalist (1809-1882). In 1859 Darwin published On the Origin of Species, which outlined his theory of evolution. was an English naturalist who ...

Natural selection is a mechanism of evolution ... as different species by the British ornithologist John Gould – became one useful example among the many other animals he saw. Charles Darwin collected ...