Between puberty and menopause, monthly, the following occurs :

Correct Answer: C

Rationale: The correct answer is C: the release of an oocyte. During the menstrual cycle, ovulation occurs where a mature egg (oocyte) is released from the ovary. This typically happens around the middle of the cycle in response to hormonal changes. This process is essential for fertilization and pregnancy to occur. A, B, and D are incorrect because: A: the maturation of a single secondary ovarian follicle - This occurs before ovulation, not during the menstrual cycle. B: the transformation of a primordial follicle into a secondary one - This is an earlier stage in follicle development, not a monthly occurrence. D: the release of a de Graaf follicle - The Graafian follicle is the mature follicle that releases the oocyte during ovulation, not a monthly event.

Correct Answer: B

Rationale: The correct answer is B: 23 autosomes. The ovule contains half the number of chromosomes as the typical somatic cell, which is 46 in humans. This is because during meiosis, the number of chromosomes is reduced by half to ensure the correct chromosome number in the offspring. Therefore, the ovule contains 23 chromosomes, which are autosomes (non-sex chromosomes). Choices A, C, and D are incorrect because the ovule does not contain the same number of somatic chromosomes, a sex chromosome, or 11 pairs of somatic chromosomes.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.