The most abundant evolutionary traits in the biological world

Creatures evolved to survive, but there were also quite useless evolutionary characteristics such as wisdom teeth in humans. Let's continue with us to point out even more useless evolutionary traits in the animal world.

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Sloth

Going through a long evolution, facing the enormous pressure of natural selection, you might think that sloths have excelled over many other candidates to continue to exist so far. Sleeping for about 10 hours a day, eating very moderately (with a diet that is mainly green vegetables) along with a peaceful life in the trees - what do they have to complain?

The unfortunate thing is that it is this overly static lifestyle. Sloth's diet is poorly nutritionally diversified, along with the slow movement to find food, so they need large stomachs and many chambers to accommodate foods. Sloths can take up to months to digest a meal, and it needs a less active lifestyle to keep energy catabolism as low as possible.

The contradictory point is that this often causes the body temperature of the sloth to drop very low. When the body temperature is too low, their gut microbiota will stop working, meaning that even though they have eaten enough for the entire month, the sloth can still die of hunger, because of the food in the digestive tract of they are not digested at all. Perhaps this is one of the stupidest, but also funniest, evolutionary characteristics in the animal world.

The arm of T-rex

Anyone who has ever seen the movie 'Jurassic Park' knows that the T-rex monster is not a joke. Nearly 14 meters long, its 1.2-meter jaws can easily tear you apart if you misfortune hit it on the road. Don't expect the kindness from T-rex, in their eyes, you're just a meal, no more and no less.

But T-rex is still often made fun of in many different ways, especially with its short hands. It's not just a joke, it's really a huge obstacle to this tyrant. Precisely because of the tiny, useless hands, T-rex could not even grasp, or put the prey in his mouth. More bizarre, T-rex has only 2 fingers on each hand, instead of 3 fingers like other dinosaurs. With 3 fingers, the grip is much more convenient.

It seems, evolution is slowly eliminating T-rex's hands, instead, they only need their deadly jaws to knock down and swallow their prey. Some people also believe that if the dinosaurs can survive longer, about 1 million more years, chances are T-rex's hands will completely disappear.

Panda

You don't understand why panda is on this list. And perhaps, the more you don't want pandas to be on this list, because they are extremely cute creatures. But perhaps, only luck will help them remain on the ground to this day.

The first thing lies in their ability to mate. You may not believe your eyes if you once witness them doing it. They have a very wrong concept in maintaining the breed, the male will choose the foot, wrist or even the ears of the children, instead of placing the right ones to put in the right place, the right place, at the right time. .

Panda's life in nature also has many troubles. They need an amount of food equal to about a quarter of their volume a day, and even eating only vegetables causes a lot of trouble for their digestive system. This is also the reason why pandas need to travel to approximately 40 times a day.

Hyenas

Not as well known as the existence of the appendix, or the rational diet of pandas, however, the hyena's genital structure is actually a good example of the evolution that has done it. How bad my job is.

Firstly, the female hyacinth possesses an oversized clitoris - so much so that it is hard to tell whether it is a sound or a penis. This is still within acceptable limits, hyenas are probably not smart enough to know what aesthetics are. And like many other animals, this is the output of many functions: urination, mating as well as childbirth.

However, everything has two advantages and disadvantages. The hyena's clitoris is about 15-18cm long, not an ideal breeding line. Before reaching the clitoris, the baby hyena had to go through a difficult journey in the vagina, not to mention the diameter of the path just about 1 inch - long enough and narrow enough for the young to die suffocated before they could see the light. Not only that, female hyenas will also suffer a lot of pain and trauma during childbirth.

Conclusion

Although these evolutionary points may appear before our eyes as an outrageous nature of absurdity, the points in this article are still merely hypotheses, or there is not enough evidence yet. dress to support them. Nature in general, as well as evolution in particular, still needs the advancement of science to clarify these mysteries. Let's hope that we will get answers in the near future.

Reference: Howstuffworks