Final answer:
The start of GnRH pulsatility is irregular, which leads to the release of LH and FSH by the anterior pituitary, important for sexual development and reproductive function.
Step-by-step explanation:
The start of Gonadotropin-Releasing Hormone (GnRH) pulsatility can be described as irregular. GnRH is a hormone produced by the hypothalamus, and its release is pulsatile, meaning it is released in bursts at regular or irregular intervals. At the onset of puberty, GnRH pulsatility is often irregular but becomes more regular with time. This pulsatile release is crucial for the proper function of the reproductive system as GnRH triggers the anterior pituitary to release both luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are essential for sexual development and reproductive function.