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Internal Animal Development

This overview of animal development explains the crucial processes that occur after fertilization. Initially, cleavage involves rapid mitotic cell division resulting in a morula, a solid ball of cells. As cells continue to divide, they migrate to form a hollow structure known as the blastocyst, which serves as a basic body plan for future development. Stem cells within the blastocyst are undifferentiated and continue to divide by mitosis, playing a vital role in the growth and formation of the organism.

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Internal Animal Development

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Presentation Transcript

  1. Internal Animal Development Including humans…

  2. Cleavage • Cleavage is: • Cell division by mitosis • Rapid cell division • Increase in # of cells, little cell growth MORULA

  3. What is a Zygote? ZYGOTE

  4. What happens next? • Cells migrate to form a hollow ball called a blastocyst (basic body plan)

  5. Stem Cells • Cells continue to divide by mitosis. • These are stem cells (not differentiated)

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