Another species is developing a human-like brain.

Despite being separated by 500 million years of evolution, the blueprint for a complex, intelligent brain is preserved in the bodies of two species, one of which is human.

According to research recently published in the scientific journal Current Biology, the remaining creatures are squids . This may also appear in some other species in the same group of cephalopods as it includes octopuses.

Scientists have observed the neurons connecting inside the eyes of developing Doryteuthis pealeii squid and discovered a stunning secret: Their brains independently evolved to develop in the same way that humans have.

Squids develop their brains in the same way as humans in the womb - (Photo: Current Biology).

This may explain the superior intelligence of squids and other cephalopods such as octopuses, including memory, the ability to use tools, camouflage, curiosity about their surroundings, the ability to be bored, daydream, and occasionally show malice or mischief. which humans previously thought were the "privileges" of their own species.

According to Live Science , this discovery also shows that despite 500 million years of species separation and evolution along distant family trees, it seems that we and squid still share an ancient connection, a programming to create advanced intelligence, which the Earth has given to two groups of creatures.

To study the brains of embryonic squid, scientists used fluorescent dyes to mark a special type of stem cell called a neural progenitor cell, before studying how they developed by taking continuous images with a microscope camera.

Previously, scientists also discovered that octopuses and squid possess some types of mRNA (messenger RNA) inside their nervous tissue similar to humans.