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It doesn't per se. Speciation occurs usually when two gene pools are isolated long enough by geography or by separate selective pressures that one group becomes able to reproduce with the other with difficulty, and eventually not at all. Horses can mate with zebras and a few other animals for instance, but produce sterile offspring.
Speciation has been observed in nature many times, and forced to occur in the laboratory. Google "instances of speciation" for examples.
What else can I help you with?
What two ideas did Darwin use to explain evolution?
natural selection and common descent
Explain the correlation between Darwin's theory of natural selection and malthus' idea divine institution?
explain the correlation between Darwin's theory and Malthus' idea
What proposed natural selection to explain change in species?
Charles Darwin! ummm it's kinda obvious! Durr
6 Explain why evolution by natural selection can not occur if the variation in a characteristic does not contribute to differences in fitness?
If there is not reproductive fitness conveyed by a variant trait, then natural selection has nothing to select and nothing to promote into the populational gene pool.
How did Darwin explain the patterns of distribution of plants and animals?
He explained them in terms of descent with modification, common descent and natural selection.
Explain what is meant by “Natural selection”?
bears light and dark
What can the theory of evolution by natural selection explain about a population?
How it can change in response to its enviroment
Is it true that natural selection helps explain how new species develop?
Yes, it is true.
State a reason to explain why a male peacock has colourful feathers?
To attract females. Natural Selection*
Explain how natural selection is at work when a species becomes extinct?
According to science, natural selection chooses the best features for the best survival. When those processes do not occur for some reason, the species does not survive.
How does Darwins theory of natural selection explain how the modern giraffe evolved from short-necked amcestors?
please answer
What two ideas did Darwin use to explain evolution?
natural selection and common descent
What is a word with a special meaning in a area of study?
Specialization
Are there other theories that explain the same event as evolution theory?
No, there are no other theories but the theory of evolution by natural selection that explain so much about evolution.
What did Darwin use to explain evultion?
Darwin used the theory of natural selection to explain evolution. Natural selection is the process by which organisms best adapted to their environment tend to survive and pass on their genetic traits to offspring. This concept helps to explain how species gradually change over time, leading to the diversity of life we see today.
Explain the correlation between Darwin's theory of natural selection and malthus' idea divine institution?
explain the correlation between Darwin's theory and Malthus' idea
What proposed natural selection to explain change in species?
Charles Darwin! ummm it's kinda obvious! Durr
