Final answer:
An oogonium carries 46 chromosomes, which is the diploid number for humans. It undergoes mitosis to form a primary oocyte with the same number of chromosomes. The unequal cytoplasm distribution in oogenesis is vital for early embryonic development after fertilization.
Step-by-step explanation:
In human oogenesis, an oogonium carries the diploid number of chromosomes, which is 46 chromosomes in total. The oogonium is a germ cell that undergoes mitosis, producing a primary oocyte that also contains the diploid number of chromosomes. The primary oocyte begins meiosis but pauses until puberty. The unequal distribution of the cytoplasm during oogenesis, with one cell getting the majority of cytoplasm while the others become polar bodies, ensures that the resulting egg contains sufficient nutrients, cytoplasm, and organelles to support early development should fertilization occur.