Question

What are the key differences in gametogenesis between females and males? What is the key step in spermatogenesis that allows for unlimited sperm production? This step is not present in oogenesis and therefore only a finite number of eggs could be produced. (0-5pts)

Guidelines: You must include in your answer how the processes are similar and how they differ. What would health implications have the finite number of eggs present to the female? What organs are responsible for each gametogenesis? When does each process start in the average individual?

Answer 1

Explanation:- Spermetogenesis occurs in testies whereas oogenesis occurs in ovaries. Both the processes are meiosis but oogenesis results in single cell ( ovum) whereas spermatogenesis produces four sperms. Every single month one follicle matures enters the process of oogenesis that gets completed after fertilisation. In female humans oogenesis starts in early stage before puberty. It gets areested in meiosis-I and again starts after puberty. Every month one egg is released from ovary in a cyclic phase called menstrual cycle. Since millions of sperms are produced due competition they face to reach egg in female reproductive tract and only few thousand reach the egg site to fertilise the egg and only one successfullly fertlise it . This is the reason why sperms are produced in large quantities. Whereas only one egg is required for zygote formation. Several eggs may result in several zygote formation. Spermatogenesis starts from the 12-14 age in males. Oogenesis starts in early stage of embryo but female starts puberty from the time it starts its menstrual cycle till menopause. However sperm production occurs throughout life of males.