Red blood is not common in humans or mammals. This color gives her hemoglobin, it's complex
It was believed that hemoglobin was "invented" by severaltimes in the course of evolution. But recent research has shown that all of these "independently" born hemoglobins are actually descended from a single ancestor gene.
To prove this, a group of scientistsstudied the sea worm Platynereis dumerilii because it is considered an animal that evolved slowly because its genetic characteristics are close to those of the marine ancestor of most animals. Researchers studied the species and compared it to other red-blooded individuals to trace the origins of hemoglobins.
The study focused on a largefamily to which hemoglobins belong: globins, proteins found in almost all living things that “store” gases such as oxygen and nitric oxide. But globins are usually located and work inside cells; they do not circulate throughout the body like hemoglobin.
As a result of the work, scientists came to the conclusion thatIn all species with red blood, the production of globin is carried out by the same gene, called “cytoglobin”. It independently evolved to become the gene that codes for hemoglobin. This new circulating molecule made oxygen transport more efficient.
Scientists now want to scale up the study to find out when and how the various specific cells in the bilaterial vascular systems originated.
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