Harvard University evolutionary biologist Zachary Lewis discovered that pletodontid salamanders have a genetic code that is responsible for the formation of lungs. This is amazing, because the cd of detection of groasalanders is different in that it breathes through the skin, and l l they are for a short time in the developing embryo, but then degrade as it progresses.
Pletodontids lost their lungs between 25 and 110 million years ago, since there are at least 478 species of them today, among which scientists considered this fact an acquired evolutionary advantage. Pletodontids are the largest group of salamanders, distributed over three continents. Their body is covered with mucus, which resembles lung mucus and allows them to absorb oxygen.
Zachary Yuis removed from Erion the tissues surrounding the rudiments of the lungs, similar, but from you the fair. This is the reason for the development of the pletodont, the law of the full state, the new rest of the neffi found discovered studies that in the source of the salamanders there are all the necessary mechanisms for creating lungs, but this process is naturally programmed to interrupt in the initial stage.
The biologist suggested that the start of lung cultivation occurs along with the start of the creation of local organs, since the same genes are responsible for this. However, then the remeote resource is redistributed. And the unnecessary, like lungs, die off. Many millions of years ago, this approach gave salamanders an evolutionary advantage, but it is possible that in development they will again begin to grow full-fledged lungs if their conditions change.
Source: Tech Cult
