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During pregnancy the embryo, consisting of a small number of identical cells, undergoes a series of changes which results in the production of a body consisting of specialized tissues and cells. Describe the changes which occur during this process
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During pregnancy the embryo, consisting of a small number of identical cells, undergoes a series of changes which results in the production of a body consisting of specialized tissues and cells. Describe the changes which occur during this process and briefly discuss how the process is controlled: In my essay I am going to discuss how the cells develop at different stages of change, cleavage, gastrulation and implantation then I am going to discuss the formation of a variety of organs and go into detail with one. Fertilization and Cleavage 24 hours post fertilization the zygote, formed by fusion of the two haploid gametes (sperm and ovum) undergoes mitotic division. After fertilization of the egg, cleavage gives rise to 2 cells, 4 cells, 8 cells, 16 cells and 32 cells. At this stage the embryo consists of similar cells. Then subdivision occurs into the inner cell mass and the trophoblast giving rise to...
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