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 ...

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 ...

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 ...

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 ...

New alleles produced by mutations can result in plants and animals becoming better adapted to their environment. Variation within a population makes it possible for a population to evolve over ...