Gametogenesis
The study of gametogenesis provides valuable information about the formation of gametes. Prepared slides were used to observe the anatomy and physiology of the processes of oogenesis and spermatogenesis. Each prepared slide from the mammalian depicted all the stages that occur in the male and female during the birth of the gametes. The eggs and the sperm provide both the blue print and the raw material from which the embryo is formed. Both classes of gametes make an equal contribution to the nucleus of the zygote, each providing a haploid genome. In the male, meiosis precedes sex cell differentiation. A single spermatagonium enters the first meiotic division as a primary spermatocyte. This division produces two secondary spermatocytes, each of which divides to form to haploid spermatids. Each spermatid than differentiates by spermiogenesis into a spermatazoan by the elaboration of structural and functional specializations that enable the sperm to fertilize the egg. Consequently four haploid sperm result from each diploid spermatogonium. The utilization of all four haploid cells in the male is significant because the testis must produce millions of sperms simultaneously.
According to the measurements recorded using the micrometer, the dimensions of the sperm from the mammal were larger than that of the ovary from the mammal. The same was true regarding the measurements of the tunica albuginea. The male showed to have a thicker tunica albuginea, whereas the females showed to be much thinner. Also, in regards to relevance in size the follicles in the ovary showed an increase in size with regards to age and maturity. The primordial was the smallest of the bunch with the measurements of .25 micrometers, with the Graafian follicle being the largest at a size of 3.95 micrometers. This showed a significant increase in size with correlation to time and maturity. Furthermore, Important differences in the process of spermatogenesis and oogenesis are as follows: The germ line is the link that provides the survival of species. Each generation of sexually reproducing organisms is dependent upon the germ line of its predecessors for its existence. Likewise the production of the succeeding generations is dependent upon the currents generation’s germ line. Further observations later preceded using the Guinea pig sperm, to further study the detail and structure of the mammalian sperm. This subject was chosen as the specimen due to its relatively large size and easier viewing capabilities under the scope. The specimen was observed in detail until all c
Some topics in this essay:
Gametogenesis Abstract,
Results According,
Materials/Methods Prepared,
mature sperm,
germ line,
meiotic division,
tunica albuginea,
meiotic division primary,
enters meiotic division,
produce polar body,
observed detail,
increase size,
sex cell,
male female,
enters meiotic,
observed dissecting,
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Approximate Word count = 940
Approximate Pages = 4 (250 words per page double spaced)
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