Summary
The concentration of RNA synthesised in the prolonged interphase of micromeres at the 16 cell stage is about 9 times higher per unit volume than in the other blastomeres. Since there are cytoplasmic connections between micromeres and macromeres, a transfer of the micromere RNA by simple diffusion is to be expected.
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Czihak, G. Kinetics of RNA-synthesis in the 16-cell stage of the sea urchinParacentrotus lividus . Wilhelm Roux' Archiv 182, 59–68 (1977). https://doi.org/10.1007/BF00848087
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DOI: https://doi.org/10.1007/BF00848087