meiosis mitosis reproductive systems

Differences between mitosis and meosis Mitosis 1.occurs in all stages 2.one stage 3.multiplies the diploid cells 4.gives two identical diploid cells 5.confirmed transmission Meiosis 1.occurs in male and female gonads 2.has two stages reductional and equational division 3.produces sexual cells by transforming the diploid cells into haploid cells 4.gives diversity of gametes (4 sexual cells) 5.nonconfirmed transmission There is no interphase between the reductional and equational division The replication of chromosomal materials appears before meiosis If there is no meiosis then there isn production of sexual cells Meiosis gives diversity of gametes that result in random segregation of chromosomes in anaphase 1 that leads to polymorphism within a population . Male reproductive system Testes Production of spermatozoa and the male sex hormone testosterone. Epididymus Maturation and storage of the sperm Vas deferential also known as spermiducts Conduction and storage of sperm Accessory glands like seminal vesicles, prostrate or cowers gland Secretion of seminal fluids Urethra Conduction of sperm and urine The seminal fluid contains fructose and other nutrients that ensure the survival and the motility of the sperm. FEMALE REPRODUCTIVE SYSTEM Ovaries Production of oocytes and female sex hormone oestrogen’s and progesterone Oviducts also known as the fallopian tube Reception of released oocytes and site of fertilisation Uterus or womb site of implantation and the development of the embryo The longitudinal section of the testis shows the presence 200 to 300 lobules The seminiferous tubule is located and coiled inside the lobule. Spermatogenesis is the formation of the sperm cell it occurs inside the seminiferoustubule in the centripetal direction from the peripheral to the center. The leydig cell also known as the interstitial cell is located between the seminiferous tubule and is reponsibkle for the production of male hormone testosterone The seretoli cell (giant cell) is located inside the seminiferous tubule and it gives nutrients for the germ cell that undergoes spermatogenesis .

meiosis

hi

hi meiosis

is a type of cell division that results in four genetically diverse gametes, each with half the number of chromosomes of the original cell, essential for sexual reproduction.

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mitosis

a type of cell division where one cell divides to produce two identical daughter cells, essential for growth, repair, and asexual reproduction.