Mother Nature knows how to surprise abruptly any magician! The site has compiled a list of tricks, which she is doing with the help of their children - animals, insects, plants and people. Agree, these tricks can not fail to delight!
sawfish in nature is capable of asexual reproduction h2> Parthenogenesis - a form of sexual reproduction, it is noteworthy that the female germ cells begin to develop in the adult body without fertilization.
parthenogenesis occurs in the animal kingdom often. The sharks, lizards and even chickens - all the animals can give birth via parthenogenesis.
Scientists until recently believed that the offspring are born "virginal by" very weak and few in number, so it can not survive in the wild. But Florida sawfish refutes this assumption.
Over nine years, the researchers involved in sampling the genetic code from the sawfish species that lived off the coast of Florida. Having examined 200 DNA samples, they found that 3, 5% of the fishes have only one parent. That is, the offspring born through parthenogenesis can successfully survive in their natural habitat.
Insects were working "gears» h2> Until recently, it was believed that the gears - important invention of human civilization, which became a symbol of an era of mechanisms. But suddenly they were found in Issus coleoptratus, miniature jumping insect body length does not exceed 3 millimeters. And this is not the usual jagged growths previously observed in other animals, and fully operational shesterёnochnye mechanisms! on the rear legs of insects rotating gears allow their limbs to move in sync, so the insect can make long jumps. < br />
Moreover, the teeth on the corners slightly rounded, which protects them from abrasion or cutting. We associate similar mechanisms with a bicycle or car transmission, but not with the animals, do not you?
All mammals urinate in 21 seconds h2> A study conducted at the Department of Biology, Georgia Institute of Technology, was so unusual that scientists have worked on it have won the Nobel Prize. The team scanned 30 placed on YouTube.com video urinating mammals, and then went to a nearby zoo to watch this process on their own. < In the end, it turned out that all mammals larger than a rat pee a little more than 20 seconds.
Yes, the bladder to empty the elephant has time for the same time as, for example, bladder cat. And this fact has a simple explanation: the large size of the animal is, the more his urethra. Cat 21 seconds time to squeeze out just a couple of drops of the elephant also emits a powerful jet.
such thing as vegetables, there is no h2> To begin with, the term "vegetable" is not a biological term. What people are called generalized "vegetables», refers to the various categories of plants
There is not even universally accepted legal definition of the term "vegetables". Because of this, sometimes there is a paradoxical situation. So, in the XIX century, the United States Supreme Court decided that the tomato must be considered a vegetable, but in some other countries it is legally defined as a fruit.
And yet people are often referred to as vegetables (when it comes to food) plants that do not have them any relation. For example, mushrooms or beans. In general, it is easier to say that the vegetable in nature do not exist.
As you can hide two people h2> In 2014, the American Lydia Fairchild was trying to get her children's father to pay child support. To prove his biological paternity, she sent to the court a petition for the passage of the appropriate test. Results of the analysis of her shocked. It was found that the defendant really is the father, but at the same time ... Lydia was not the mother of my children!
Clearly, for a woman it was a surprise. As many as nine months, she bore two sons, and later gave birth to them. However, the traces of her DNA in the genes of the boys were missing. The judge suggested that Lydia is trying to deceive him, to get money. However, the truth was much stranger: from a scientific point of view, the children's mother Lydia was her unborn sister.
How to explain it? In the early stages of pregnancy the fetus in two rarely come together, forming a single body, a chimera. As a combination of two different cell lines, chimeras can carry in his egg (or sperm) genes differ from other parts of their bodies. In some extent, some of the organisms chimeras does not belong to them.
From chickens can make dinosaurs h2> In January 2014, scientists from the State University of Chile wanted to find out how to navigate the ancient dinosaurs. Since lizards do not have lasted to the present time some 65 million years, they decided to observe the usual chicken. However, more needed to be attached to the prosthesis behind them, like the tails of dinosaurs.
Do you think this is a joke? Not at all! Scientists really wanted to study the characteristics of movement tyrannosaurs. And any chick is a distant descendant of the prehistoric reptiles. The experiment was considered successful. According to the report (and accompanying videos), the team successfully made chickens walk like dinosaurs. For a small, but important discovery Chilean scientists have become candidates for the Nobel Peace Prize.
Incorrect Black Holes h2> In September 2015 representatives of the Royal Astronomical Society issued a press release in which it announced the opening of a supermassive black hole at the center of one of the faraway galaxies. Its size surprised even scientists. According to calculations, black hole 32 times more than is possible from a physical point of view.
All previously discovered objects of this type conform to a solid list of space law. But SAGE0536AGN galaxy was discovered black hole whose mass is 350 million times the mass of the Sun! The size of the black hole is too big for its host galaxy. And you know that scientists have said, make this discovery? They just said that a black hole can not be!
However, after a few days, they suggested that SAGE0536AGN may be representative of a hitherto unknown class of galaxies.
Chimpanzees are able to plan h2> In the zoo Burgers (Netherlands), the group of cinematographers to shoot one of the film launched a drone over the territory in which they live monkey. When the aircraft cleared the high fence was amazing. Female chimpanzees using sticks attacked the drone and shot it down. And then it attacked her relatives, who broke an expensive technical apparatus to pieces.
Once scientists have studied the video, they made a shocking statement: in their view, chimpanzees attacking drone, planned the attack in advance
When the machine is turned around only to then fly over a flock of monkeys already started to prepare a stick to attack. Then they waited patiently until he approach them. An analysis of their facial expressions showed that the animals were not afraid. That is, firing stick is the result of carefully calculated attacks, rather than random luck panicked monkeys.
Scientists for the first time witnessed the planning and coordination of the actions of higher primates.
The village where the girls spontaneously turn into boys h2> It would seem that no specific surgical procedures woman can not spontaneously turn into a guy. But for every rule there are exceptions. In this case, we will focus on the inhabitants of the small village of Salinas, located in the Dominican Republic. Their children regularly change their sexual identity, such is their physiology!
About one in 90 children born in the village of Salinas, there is a rare genetic mutation. It is caused by abnormally low enzyme called 5-alpha reductase.
This means that at birth and during the first years of life boys look just like a girl
via www.publy.ru/post/19595
