Birds and insects fly. Why do insects have more advantages?The wings of insects are born out of thin air

Speaking of soaring in the blue sky, we may first think of birds, but the most flying on the earth is not birds, but insects.

Insects are definitely a bug existence in the flight industry, but from the outside, this creature does not seem to be able to fly, because their body structure does not conform to air dynamics at all, thin wings plus bulky and bulky The body makes people feel that it will fall to the ground as soon as it is flying, but in fact, insects can not only fly, but also fly well, especially the flying champion of the insect world. Its flying ability is difficult to compare. The flying speed of the dragonfly can reach 50 kilometers per hour, and some types of dragonflies can also perform uninterrupted flights for 5,000 kilometers in a row, which makes most birds be at no way. What makes other flying creatures angry is that the wings of insects grow out of thin air.

There are many types of creatures on the earth, and vertebrates are undoubtedly the best of them.

Compared with other creatures, vertebrates have obvious advantages in all aspects, but only a little bit of the ancestors of vertebrates are worried, and that is flying. Humans want to fly into the blue sky, and they can rely on their own wisdom to achieve this, but for the ancestors of vertebrates, only evolution can be rely on. So some vertebrate forelimbs began to change, and after a long years, they finally evolved into wings. With wings, but lost the forelimb, but the birds and other vertebrates with wings do not care, because they can finally fly freely in the sky, but when they see insects, they are exchanged with forelimbs in exchange. The wings become not fragrant, because the wings of these guys grow out of thin air.

Insects are undoubtedly one of the most successful animals in the world. Among all the known animals, the number of insects accounts for more than 75%.

The history of insects is very long. At present, the oldest insect fossils are about 358 million years old. However, unlike the current insects, insects in ancient times have no wings. Why do insects in ancient times have no wings? Because they do not need. The earliest insects were evolved from the nodular animal in the ocean. At that time, the insects could basically be said to be the earliest residents on the earth's land. For them, the land food in ancient times was rich without natural enemies. The crawling is enough.

At the same time, the animals in the ocean were not idle. Soon after, amphibians and reptiles came from the ocean to land.

Compared with these powerful amphibious and crawling animals, the insects look too weak. In order to survive, they can only escape. If you can't run, the insects start to jump. Some insects find that the fan is used to absorb the wings of the sun when jumping. It can jump further. Slowly, the wings have evolved into wings. However, this is just a conjecture. Another kind of conjecture is that the wings of insects are not evolved from a single organ, but a combination of a variety of organs. This change makes insects not only have wings, but also retain them. The original three pairs of legs. If birds and bats see this conjecture, they will definitely feel unfair: why can they give birth to one pair or even two pairs of wings, but we use forelimbs to exchange?

The reason why insects do not need to exchange wings with forelimbs is because insects are not as advanced as vertebrates.

The body structure of vertebrates is extremely complicated, which makes them only fine -tuned in the process of evolution. For example, accidental genetic mutations make the front limbs of vertebrates flat, and once again accidental genetic mutations cause their finger to change, and the accumulation of countless genetic mutations slowly forms wings. If a pair of wings grow through the genetic mutation? no. Because the body of the vertebrate is a whole, all the structural characteristics are written in genes. If a kind of thing is rarely increased, it will cause the entire body structure to change, then it is difficult for this mutant to survive. For example, this is the case for some patients with organs.

Insects are different, and the body structure of insects is like a duplicated building block.

If you look closely, you will find that the insect's chest can be divided into three sections. Each section grows with one pair of legs, and there are three pairs of legs. The body structure of each section of insects is the same and irrelevant, which means that when the body of a certain section changes in structure due to genetic mutations, it will not affect the changes in other sections. There are more possibilities for the genetic mutation of insects, so insects can add some unwanted structures on the road to evolution, and can also delete some excess parts, and the success rate of this change is very large. Such a huge change is likely to die, so if you want to fly into the blue sky, you can only turn the forelimb into wings step by step.

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