How are sperm different from ova? Select all that apply.

In humans, an ovum contributes an X chromosome, while a sperm contributes either an X or a Y chromosome, so sperm determine whether the offspring is typically female or male. Sperm are produced continuously after puberty, whereas a woman’s immature ova are present from birth. Sperm are also much smaller than ova. Choice C is reversed: sperm can move using their tails, while ova do not move on their own.

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