Because the frog embryo develops externally this process can be easily observed the egg is large enough to be visible to the naked eye and develops quickly making the study of the frogs embryonic development one that can be carried out over a short period typically between 12 to 16 weeks. Development of frog embryonic development when sperm fertilize the egg streaming movements are set up in the egg and these results in distribution of materials so that three regions can be seen the upper animal hemisphere pole which is pigmented and lower white vegetal pole. Frog embryology the egg the frog egg is a huge cell its volume is over 16 million times larger than a normal frog cell during embryonic development the egg will be converted into a tadpole containing millions of cells but containing the same amount of organic matter
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