While they share the same DNA at fertilization, the environment starts to alter the DNA and its expression (how the DNA is processed). So you end up with two persons who share a very large amount of their DNA (large amount of what is not common among all humans anyway) but still differ, even if you ignore any discussion of free will, consciousness and such. The environment has an even greater influence after birth. There is even a debate, wheter the environment has a greater impact than the DNA.
Thank you for your answer! I had no idea that environment plays a factor in how your DNA is expressed! That’s super mindblowing to me, thank you so much!
While they share the same DNA at fertilization, the environment starts to alter the DNA and its expression (how the DNA is processed). So you end up with two persons who share a very large amount of their DNA (large amount of what is not common among all humans anyway) but still differ, even if you ignore any discussion of free will, consciousness and such. The environment has an even greater influence after birth. There is even a debate, wheter the environment has a greater impact than the DNA.
Thank you for your answer! I had no idea that environment plays a factor in how your DNA is expressed! That’s super mindblowing to me, thank you so much!