Question

Which of the following is true about human gamete formation?

• A. The final step of gametogenesis results in the formation of two diploid cells.
• B. The result of oogenesis is the formation of four fully functional ova.
• C. Spermatogenesis and oogenesis are both regulated by a monthly cycle.
• D. Oogenesis occurs throughout the lifetime of a female.
• E. Spermatogenesis results in four fully functional sperm cells.

Answer 1

Answer: (E)

Spermatogenesis results in four fully functional sperm cells.

Gametogenesis is a biological process by which diploid or haploid precursor cells undergo cell division and differentiation to form mature haploid gametes. Spermatogenesis is the process in which 4 spermatozoa are produced from male primordial germ cells by way of mitosis and meiosis. The initial cells in this pathway are called spermatogonia, which yield primary spermatocytes by mitosis. Oogenesis starts with a germ cell, called an oogonium (plural: oogonia), but this cell undergoes mitosis to increase in number, eventually resulting in up to one to two million cells in the embryo . Thus, the correct answer is option E.