Through his travels, Darwin investigated how variety of species came to be and he worked on his theory of natural selection although at that time, it was referred to as selection where he theorised that certain survival traits selected for gave organisms an increased rate of survival, similar to artificial selection in pigeon breeding which was prominent back in the day.
Explanation: The importance of mitotic cell division is to produce two daughter cells that are genetically identical. The genetic materials of the parent cell are arranged and moved towards the two spindle poles with the help of the spindles so that there will be an even distribution of the parent cell's genetic materials between the resulting two daughter cells.