While it might sound crazy to some people, but not all DNA comes from our ancestors. In fact, some of it is taken from elsewhere. As many studies have discovered, your DNA also includes the genes from eight or more retroviruses.
That usually happens when a virus takes over a cell and controls its mechanisms until it ends up coding the DNA. These genes even became part of the human DNA, as they were incorporated in it throughout time.
And even though these genes are still unknown and considered to be alien to out genetic ancestry, they have been found to perform essentials functions in the human reproduction system.
Read also: 11 of the Most Deadly Diseases in History.
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