Theory because a theory is a well substantiated explanation of how a particular phenomenon works based on the set of facts which had been repeatedly confirmed through observations and experiments. A scientific theory gives reliable account of a phenomenon.
The large cell develop into mature gamete call ovum and it cytoplasm from the egg. The unequal distribution of the cytoplasm during oogenesis is necessary as the zygote that results in the cytoplasm from the egg. So the egg needs to have as much cytoplasm as possible
