Which statement correctly describes a human sperm cell or ovum?
Correct answer: B. It contains 23 chromosomes before fertilization
- A. It contains 46 chromosomes before fertilization
- B. It contains 23 chromosomes before fertilization
- C. It contains 23 pairs after meiosis is complete
- D. It contains no chromosomes until fertilization
Explanation
Sperm and ova are haploid gametes, each normally containing 23 chromosomes. Fertilization restores the diploid number of 46 chromosomes in the zygote.
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About Reproductive System
The reproductive system covers the male and female reproductive organs, gamete formation, the menstrual and ovarian cycles, fertilization, implantation and pregnancy. It explains the roles of FSH, LH, oestrogen, progesterone and testosterone, while distinguishing spermatogenesis from oogenesis and the reproductive organs from the accessory glands.
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