Why did the constitution provide that the total number of seats in the house of representatives should be apportioned among the states based on population, rather than being set at a fixed number?

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !