Which statement best describes the sperm cells of an animal that are produced from primary sex cells?
A. They are larger than egg cells.
B. They contain the monoploid number of chromosomes.
C. They are diploid as a result of mitotic division.
D. They are genetically identical to the primary sex cells.
When a primary sex cell undergoes meiosis, 4 unique monoploid cells are formed. Sperm cells are much smaller than egg cells, although they both go through the process of meiosis, because all 4 sperm cells divide equally and are viable, while egg cells divide unequally, leaving the smaller polar bodies to die.