Humans have 46 chromosomes, 2 sets of 23 chromosomes, Are there any cells with less than 46 chromosomes Not all living things have 46 chromosomes for example mosquitos have 6, onions have 16 and carp have 104. read more
The number of chromosomes visible at the beginning of mitosis is whatever the full complement of chromosomes is for that organism. In humans, it would be 46. As mitosis proceeds, these are replicated to 92, but at the very beginning of mitosis you would still have the diploid number. read more