Which one of the following statements with regard to embryonic development in humans is correct?

  • A
    Cleavage divisions bring about considerable increase in the mass of protoplasm
  • B
    In the second cleavage division,one of the two blastomeres usually divides a little sooner than the second
  • C
    With more cleavage divisions,the resultant blastomeres become larger and larger
  • D
    Cleavage division results in a hollow ball of cells called morula

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