The DNA of every single cell in your body can have spontaneous mutations. But what is important for what you become in general is the DNA of your first cell tha

The DNA of every single cell in your body can have spontaneous mutations. But what is important for what you become in general is the DNA of your first cell that is rapidly multiplied to form your body. And what is important for what you leave on the next generation, is the DNA of your reproducing cells, which can too be individually altered, of course.