Actually you can thank every link of an unbroken chain of heteronormative encounters that spans from you, to your mom and dad, all the way to about 1 billion years ago in the Stenian period, when sexual reproduction came to be. Each of us is the result of approximately 50 million CONSECUTIVE successful male/female pairings. One slip up? There's the end of that particular genetic link.
Actually you can thank every link of an unbroken chain of heteronormative encounters that spans from you, to your mom and dad, all the way to about 1 billion years ago in the Stenian period, when sexual reproduction came to be. Each of us is the result of approximately 50 million CONSECUTIVE successful male/female pairings. One slip up? There's the end of that particular genetic link.