Chapter 49 - Summary
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  Part 7 | Chapter 49 Tutorial Home
How does a microscopic, unicellular zygote give rise to a complex animal?
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SUMMARY
Develpment proceeds as a blend of:

  • cell division and growth
  • cell determination and cell differentiation
  • pattern formation and morphogenesis

Animal development starts at fertilization, passes through cleavage and gastrulation, and ultimately results in organogenesis, or organ formation.

Activity
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