Which of the following is not evident that the pattern of cleavage is determined by factors in the egg cytoplasm rather than by genes of zygote

  • A

    Cleavage is prevented by injection of a protein synthesis inhibitor

  • B

    Cleavage is not affected by injection of inhibitors of $RNA$ synthesis into the zygote

  • C

    Interspecific hybrid zygotes go through normal cleavag but die at the beginning of gastrulation

  • D

    The direction of the first division of cleavage in the snail Cepaea is determined by the mothers genotype

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