Why did human ancestors have tails?

If you look at the birth process of a baby, you will find that humans have tails at the beginning of the embryonic stage. The human tail during gestation.

It is most noticeable around the 31st to 35th day and is about one-sixth the size of the embryo itself. By the time the embryo develops into a fetus, this tail is absorbed by the body and degenerates into four or five fused tail vertebrae.

It can be seen that human ancestors had tails that only disappeared at a certain stage of evolution, while early embryos still retain the memories of their ancestors.

Only in rare cases do some people have incomplete tail degeneration that requires surgical removal after birth. This long-lost ancestral trait occasionally reappears in some individuals, which we call atavism.

However, even if a baby is born with a tail, it is a "soft tail" that does not contain the tail vertebrae, only blood vessels, muscles, and nerves. (Usually a "long tail" is a manifestation of a spinal lesion).

Actually, the coccyx of human and fish embryos.

All are buried in the tail vertebrae, and due to the blockage of molecular signal transmission, they do not develop into shape, that is, humans eliminated the tail twice, the first time the tail fin, and the second time the fleshy tail.

In a way, our tails have always had a feature because each of us has a series of vertebrae that fuse into a series of vertebrae at the end of our spine, called the coccyx. This also shows that our ancestors had tails.

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Why don't humans have tails in the process of evolution? You'll understand after reading it.

It is not because of the tail that people with tails are eliminated, but because the effect of tails on people has been so small that tails will only be a burden for humans now, so humans will not have tails after evolution. .

Humans evolved from Australopithecus, whereas apes did not have tails.

Australopithecus may have had tails, as can be seen from the fossilized tail vertebrae, but how the tail disappeared may be the result of a genetic mutation. According to scientists, the current human beings have evolved from only more than 200 of them, and they have been active in a certain area and have undergone mutations due to the influence of the external environment. The most typical is the loss of body hair in humans, which is also the result of genetic mutations.

Personally, I think that the human tail has not degenerated, and the human has always had a tail when he was a fetus, but as the fetus slowly develops, the tail foot interval begins to disappear and degenerate.

If you look at the ultrasound, you will find that the fetus still has a tail when it is formed, but after about a month, the tail gradually degenerates and becomes a coccyx that is fused with the vertebrae.

Human beings are better than apes, this is only the speculation of experts, and has not been confirmed, because the human tail has slowly lost the role of the tail in long-term life, so it began to degenerate.

From this process, the first appearance of human beings was an animal with a tail called a monkey. But due to changes in the environment and the times, monkeys slowly began to evolve into apes.

With the evolution process of human beings, the dominant organs develop, and the role of the tail becomes smaller and smaller, and even plays an obstructive role, so the tail is gradually eliminated in the process of evolution

Because the tail has lost its proper role, in the evolution from ape to man, the human tail is gone.

Why don't humans have tails in the process of evolution? You'll understand after reading it.