The earth is a huge vessel for evolution.
Like the basic laws of gravity, evolution is one of the basic laws of nature. In the process of multiplication, many organisms complete the evolutionary journey of species.
Modern creatures, which are basically in the late stages of evolution, such as the neck of the giraffe, do not continue to grow. According to Darwin's "Origin of Species", the giraffe species had a relatively short neck (similar to the neck of other animals) in the early days of its birth, and later the number of herbivores on the earth gradually increased, and the giraffe with a long neck (X gene is more prominent) was able to survive due to its innate advantage. The X gene has evolved over several generations, resulting in the fact that the neck of the giraffe is now significantly larger than that of other animals.
Why did only giraffes' necks evolve in the direction that used to be longer? Why don't other herbivores learn from this evolution?
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中文站点: 可尔物语