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10 mysteries of biology, who has yet to solve
Bashny.Net
We humans are curious than cats! Maybe that's why evolved into intelligent beings? .. However, the reason is often only enough to observe, for example, the facts in this list are already known to scientists, but as it happens, why and what - go figure it out! The site publishes a list of riddles, clues which are still hiding from us in a fog of uncertainty.
1. The paradox Peto h2> Each cell in your, and any other body with each of its division has a chance to say, "go crazy", and it happens quite often: there are errors in the DNA, formed the "wrong" cells, subsequently leading to their self-destruction. However, if this does not happen, defective cell starts to divide, divide and even hundreds of thousands of times to share - and leads to the formation of cancer.
2. Reproduction of blue whales h2> Speaking of blue whales. Have you ever seen a photograph of two giant copulating fishes (which are actually mammals, for that matter, and dolphins)? Did not see? That has not been seen. Because it is not. No one has yet been able to capture the process of conception kityat. Strange, huh? ..
3. Homing h2> Homing (from the English. Home - the house) - the ability, allowing some animals to return to their nest / den / home river after long migrations. It occurs in nature quite often. And despite the fact that scientists have long been familiar with this phenomenon, its mechanism is still of great interest to scientists and neuroscientists.
4. Alkaloids h2> morphine, cocaine, caffeine, nicotine (and other -in) - all these alkaloids, nitrogen-containing organic compounds of natural origin. They are produced by many plants, fungi, bacteria and animals. And until we find them the most diverse applications, their natural purpose remains unclear.
5. Shape the fish head-hammer h2> It is not clear how and why these sharks have gained such a strange shape of the head. Some scientists believe it's all about location shark eyes, which at such a considerable distance from each other to give a review of 360 degrees. Others believe that the original structure of the head makes these sharks into "living minesweeper" - and yes, sharks do have the "fifth sense" that allows them to capture the electromagnetic waves emanating from other living beings.
6. "Fairy Circles» h2> The nature of these mysterious circles is the subject of much debate. Some studies suggest that the circles are formed as a result of sand termites Psammotermes allocerus.
7. Evolution of floor h2> What are the evolutionary advantages of sexual reproduction allowed to become dominant on our planet? What generally led to his appearance? These and many other questions concerning the origin of gender variation, still remain open.
8. The functions of DNA h2> The majority of our genome consists of so-called "junk DNA" - and it is called so because we have no idea why it is needed and what functions are performed. But this is about 98% of the total DNA.
9. The evolution of flowering h2> The flowers are so ubiquitous in our lives, and we can not think of wondering about their origin - it seems as if they have been here forever. However, this is not true. The first flowering plants appeared 120 million years ago. Before them the world "right" gymnosperms, appeared about 370 million years ago. Why with the time of their flowering ousted - a complete mystery.
10. Ebola h2> We have already learned about the virus are quite a few - the scientists even managed to cure a monkey on it. Nonetheless, despite all our efforts, the origin of the virus is still a mystery. It is also unclear where the virus hides in between outbreaks.
1. The paradox Peto h2> Each cell in your, and any other body with each of its division has a chance to say, "go crazy", and it happens quite often: there are errors in the DNA, formed the "wrong" cells, subsequently leading to their self-destruction. However, if this does not happen, defective cell starts to divide, divide and even hundreds of thousands of times to share - and leads to the formation of cancer.
It is logical to assume that the more cells in the body, the more likely the occurrence of tumors, and some blue whale or, for example, the elephant must have much higher predisposition to cancer. But it is not working. But as? It is not clear.
2. Reproduction of blue whales h2> Speaking of blue whales. Have you ever seen a photograph of two giant copulating fishes (which are actually mammals, for that matter, and dolphins)? Did not see? That has not been seen. Because it is not. No one has yet been able to capture the process of conception kityat. Strange, huh? ..
3. Homing h2> Homing (from the English. Home - the house) - the ability, allowing some animals to return to their nest / den / home river after long migrations. It occurs in nature quite often. And despite the fact that scientists have long been familiar with this phenomenon, its mechanism is still of great interest to scientists and neuroscientists.
4. Alkaloids h2> morphine, cocaine, caffeine, nicotine (and other -in) - all these alkaloids, nitrogen-containing organic compounds of natural origin. They are produced by many plants, fungi, bacteria and animals. And until we find them the most diverse applications, their natural purpose remains unclear.
5. Shape the fish head-hammer h2> It is not clear how and why these sharks have gained such a strange shape of the head. Some scientists believe it's all about location shark eyes, which at such a considerable distance from each other to give a review of 360 degrees. Others believe that the original structure of the head makes these sharks into "living minesweeper" - and yes, sharks do have the "fifth sense" that allows them to capture the electromagnetic waves emanating from other living beings.
6. "Fairy Circles» h2> The nature of these mysterious circles is the subject of much debate. Some studies suggest that the circles are formed as a result of sand termites Psammotermes allocerus.
7. Evolution of floor h2> What are the evolutionary advantages of sexual reproduction allowed to become dominant on our planet? What generally led to his appearance? These and many other questions concerning the origin of gender variation, still remain open.
8. The functions of DNA h2> The majority of our genome consists of so-called "junk DNA" - and it is called so because we have no idea why it is needed and what functions are performed. But this is about 98% of the total DNA.
9. The evolution of flowering h2> The flowers are so ubiquitous in our lives, and we can not think of wondering about their origin - it seems as if they have been here forever. However, this is not true. The first flowering plants appeared 120 million years ago. Before them the world "right" gymnosperms, appeared about 370 million years ago. Why with the time of their flowering ousted - a complete mystery.
10. Ebola h2> We have already learned about the virus are quite a few - the scientists even managed to cure a monkey on it. Nonetheless, despite all our efforts, the origin of the virus is still a mystery. It is also unclear where the virus hides in between outbreaks.
via mixstuff.ru/archives/91613
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