In humans, what determines the sex of offspring and why? a. the male determines sex because the sperm can fertilize either a female egg or a male egg. b. the female gamete determines sex because only the female gametes can have one of two functional sex chromosomes. c. the female gamete determines sex because only the female gamete provides cytoplasm to the zygote. d. the chromosome contribution from both parents determines sex because the offspring uses all the parents’ chromosomes. e. the male gamete determines sex because each male gamete can contribute either an x or a y chromosome.