EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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organisms of different phyla interbreed and produce fertile offspring.
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environmental conditions remain stable for long periods.
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individual organisms change drastically in a single lifetime.
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a series of mutations lead to changes in genetic structure.
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Detailed explanation-1: -Thus, new species form when individuals from diverging populations no longer recognize one another as potential mates, or opportunities for mating become limited by differences in habitat use or reproductive schedules.
Detailed explanation-2: -They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.
Detailed explanation-3: -Charles Darwin’s 1859 theory of evolution by natural selection put forward the idea that evolutionary change or divergence accumulates steadily and slowly, in small steps, as one species succeeds the previous one in the struggle for existence.
Detailed explanation-4: -Natural selection. According to this theory; evolutionary change, comes about through the abundant production of genetic variation in every generation. The relatively few individuals who survive, owing to a particularly well-adapted combination of inheritable characters, give rise to the next generation.