paolo wrote:
One of the problems that baffles me more is that of recursivity. The primal cell has instructions to divide into two cells, I think they call this mitosis. These two cells divide again and again up to reach, in the human body, 300 trillion. How happens that at some point they stop dividing, how happens that they differentiate into 200 different kinds of cells, some have short life, some (the neurons) last for the whole life of the individual. Given that the instructions to do all this are in the DNA, and that the DNA is identical in every cell, derives from that primal cell how all this is possible? Probably genetists know but I will never understand. Recursivity is a mathemathical problem, but here we have do with life. elephants, oaks, whales, hippos.
I know that erythrocytes have no DNA and gametes had halved DNAs, but this does not simplifies the problems.
The original cell division is meiosis and the multiplying numbers one is mitosis.
Amazing isn't it? But God creates life, and we can't understand as much as God as we are less intelligent.