Which of these statements is false? O In humans, each of the 22 maternal autosomes has a homologous paternal chromosome. O In humans, the 23rd pair, the sex chromosomes, determines whether the person is female (XX) or male (XY). Single, haploid (n) sets of chromosomes in ovum and sperm unite during fertilization, forming a diploid (2n), single-celled zygote. O At sexual maturity, ovaries and testes produce diploid gametes by meiosis. O Sexual life cycles differ with respect to the relative timing of meiosis and fertilization.