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BiologyBiology
27 March, 21:20

Which of these events occurs first? select one:

a. cleavage

b. implantation

c. formation of the placenta

d. gastrulation?

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Answers (1)
  1. 27 March, 22:53
    0
    The event that occurs first is cleavage. This occurs when the zygote (cell that is fertilized) divides itself and creates morula, which is a grouping of cells. Essentially, cleavage is the fertilization and division of the cell.
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