When will natural selection occur?
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Four general conditions necessary for natural selection to occur are:
A. More organisms are born than can survive.
B. Organisms vary in their characteristics, even within a species.
C. Variation is inherited.
D. Differences in reproduction and survival are due to variation among organisms.
If all four of these conditions occur, which they commonly do in both natural and human-influenced ecological systems, then natural selection will occur. If any of these is not true, then natural selection cannot occur. Let's consider each of these in a bit more detail.
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✌✌Hope this will help you☺
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Four general conditions necessary for natural selection to occur are:
A. More organisms are born than can survive.
B. Organisms vary in their characteristics, even within a species.
C. Variation is inherited.
D. Differences in reproduction and survival are due to variation among organisms.
If all four of these conditions occur, which they commonly do in both natural and human-influenced ecological systems, then natural selection will occur. If any of these is not true, then natural selection cannot occur. Let's consider each of these in a bit more detail.
✨✨✨✨✨
✌✌Hope this will help you☺
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It is readily apparent that the organisms with the highest rates of survival and reproduction will be those that have their genes best represented in the next generation, and hence natural selection occurs whenever variation in survival and reproduction is at least partially caused by a heritable trait that varies
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