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Developmental Biology Overview - Anatomy & Physiology (view source)
Revision as of 14:44, 19 August 2008
, 14:44, 19 August 2008→[[Developmental Biology - Introduction - Anatomy & Physiology|Introduction to Developmental Biology]]
#*Fertilisation produces a unicellular zygote which undergoes a series of mitotic divisions to eventually become a multicellular organism. Mitosis produces (i) growth by hyperplasia (ii) an increased number of cells for greater diversity of function, and thus more complex organism.
#*Fertilisation produces a unicellular zygote which undergoes a series of mitotic divisions to eventually become a multicellular organism. Mitosis produces (i) growth by hyperplasia (ii) an increased number of cells for greater diversity of function, and thus more complex organism.
#Cell differentiation
#Cell differentiation
#Morphogenesis
#*As embryogenesis progresses, cells become specialised in structure and function. Regulation of gene expression allows different proteins to be expressed in some cells, allowing different tissues to exists despite all cells containing the same DNA. At the blastomere stage (16 cells), cells are '''totipotent''', meaning they have the capacity to form every adult cell type. As the embryo progresses and enters gastrulation cells become '''pluripotent''', meaning they can form several but not all cell types. Eventually, most cells terminally differentiate and can no longer form any other cell type.
#Morphogenesis
#*
==[[Developmental Biology - Early Embryonic Development & Implantation - Anatomy & Physiology|Early Embryonic Development & Implantation]]==
==[[Developmental Biology - Early Embryonic Development & Implantation - Anatomy & Physiology|Early Embryonic Development & Implantation]]==