The questions "What are species?" and "How do we identify species ... In this page, you will learn about variation within gene pools, as well as the ways in which this variation can be an ...

Learners will understand that variations can occur within a species. Learners will understand that changes in the environment can affect a species’ ability to survive and reproduce. Show your class ...

The variation within a single species has produced differences as large as those between two separate species. Some critics of the theory of evolution argue that it doesn't convincingly explain ...

Genetic variation describes naturally occurring genetic differences among individuals of the same species. This variation permits flexibility and survival of a population in the face of changing ...

Species close speciesA type of organism that is the basic unit of classification. Individuals of different species are not able to interbreed successfully. are extinct if there are no living ...

Microorganisms—bacteria, viruses and other tiny life forms—may drive biological variation in visible life as much, if not ...

There are, however, rare examples of asexual species that reproduce by cloning. Each offspring is genetically identical to the parent, with little variation generation after generation.