EVOLUTION
SOURCES OF VARIATION IN A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The change from one species into two or more distinct species.
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The movement of a group of organisms into a new area.
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The ability to mate and reproduce.
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The death of an entire species.
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Detailed explanation-1: -Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics. The demands of a different environment or the characteristics of the members of the new group will differentiate the new species from their ancestors.
Detailed explanation-2: -New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed. Darwin envisioned speciation as a branching event.
Detailed explanation-3: -It is an evolutionary process that leads to the formation of a new and distinct species that is reproductively isolated from another species. Speciation is also called ‘cladogenesis’, which means arising from a splitting event where the parent is split into two distinct species.
Detailed explanation-4: -“Speciation is the process of formation of new species from existing populations.”
Detailed explanation-5: -Speciation is defined as the evolutionary formation of new biological species, usually by the division of a single species into two or more genetically distinct ones. Speciation occurs along with the help of genetic drift, migration, geographical isolation, and natural selection.