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First of all, we know that variation is common in nature, and that we humans have evolved from apes to today with our own buildings and societies, and dominate the environment, so we can say that we are the result of mutation (if the other party proposes that we are the result of evolution, then ask the other party, is the small change mutation?). So, there's a good thing about variation.
However, are all variations good? Who is to say whether this is good or not?
We know that the plague once ravaged the earth, human beings tried every means to strangle rats, but rats rely on strong adaptability, produced countless mutations, so far there is still no rat poison can completely kill mice, rat resistance is so fast, like ghosts. For us humans, this variation of rats is bad for us, so we say it's bad. But for rats, they adapt to their new environment in order to survive, to adapt to our drugs, and for their own survival, their mutations are good.
In the same way, we cannot generalize whether mutation is good or bad for humanity.
In thousands of worlds, good variants must exist, such as penicillin, hybrid rice, etc., and bad variants, such as influenza viruses and so on.
But we humans are refining our science to control these variations and try to make it go in a beneficial direction......
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The survival of the fittest, as long as it can help to adapt to the living environment, is good, vice versa. It's a difficult question, some people have cheap cells that can provide the body's immune function, and some people will destroy the body.
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Most variants are harmful to living organisms. Since everything is the product of a long-term evolutionary process, they have achieved a high degree of harmony with environmental conditions. If a mutation occurs in the matching gene, it is possible to disrupt this coordination.
Therefore, genetic mutations are often detrimental to the survival of organisms. For example, most of the human genetic diseases are caused by genetic mutations, which pose a serious threat to human health. Another example is the albino seedlings that are common in plants, which are also formed by genetic mutations.
Due to the lack of chlorophyll, this seedling cannot photosynthesize to produce organic matter, which eventually leads to Deadpool's death.
Mutation is not conducive to its survival and is called adverse mutation. For example, albino seedlings sometimes appear in corn, such seedlings do not have chlorophyll, cannot photosynthesize, and die prematurely, which is an adverse variation.
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Question Analysis: Variation refers to the difference between offspring and parent.
The phenomenon of differences between offspring individuals is divided into favorable variation and unfavorable variation according to whether the variation is beneficial to the organism, the favorable variation is beneficial to the survival of the organism, and the unfavorable variation is unfavorable to the survival of the organism, according to the cause of the variation, it can be divided into heritable variation and non-heritable variation, the heritable variation is caused by the change of genetic material and can be passed on to offspring, and the variation caused by environmental change is a variation that is not inherited and cannot be passed on to the offspring, so the description of the stem is wrong.
Comments: This question is a basic question, which is easier, and the key to solving this type of question is to be proficient in the types of variation.
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