meiosis. produces four genetically unique cells, each with half the number of chromosomes as in the parent. mitosis. produces two genetically identical cells, each with the same number of chromosomes as in the parent. Meiosis begins with a diploid cell, which contains two copies of each chromosome, termed homologs. Solution. Spermatogenesis: Formation of sperms in testis is called as spermatogenesis. It involves the following steps: (1) Multiplication phase: In this phase, the cells of generative layer divide and redivide to produce spermatogonia. (2) Growth phase: In this phase, spermatogonia grows and then it is called as.spermatocytes. (3) Maturation The formation of sperms in testis is called as spermatogenesis. It involves the following steps: (1) Multiplication phase: In this phase, the cells of the generative layer known as germ cells divide and redivide through mitosis to produce spermatogonia. Assignment 1: Spermatogenesis and Oogenesis (30 pts) For this assignment, you are to explain the process of Spermatogenesis and Oogenesis is as much detail as possible. They are complex processes that require a personal understanding to write (or explain) them coherently. Simply copying out information will not work (and marks will reflect that). During spermatogenesis, many cellular events ensure that diploid spermatogonia (2n) can become haploid spermatids (1n). Some of these events are described in (a–c). (a) Mitosis. Type A spermatogonia undergo either self-renewing replication or differentiation into intermediate and type B spermatogonia. If the pituitary gland is removed, spermatogenesis can still be initiated by follicle stimulating hormone (FSH) and testosterone. FSH stimulates both the production of androgen-binding protein (ABP) by Sertoli cells and the formation of the blood-testis barrier. ABP is essential to concentrating testosterone in levels high enough to initiate lQRoI.

explain spermatogenesis in detail