Binary fission occurs in single-celled organisms only and mitosis is just one cell dividing into two (eukaroytic cells)
Meiosis involves crossing over where chromosomes exchange genetic segments, resulting in different sets of chromosomes. Each time an egg or sperm created, it is different due to this recombination. Mitosis on the other hand is non-sex cells replicating exact copies of themselves which lead to no genetic variation as they aren't involved in producing offspring.
The rate of evolution is the means of
Darwinism
A tcells was the first day I had to go home to the dog and I see
B it will be exactly 100 grams