| 1. | Finally, the third set of blastomeres are the deep cells.
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| 2. | An embryo counting 16 to 64 blastomeres is called a morula.
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| 3. | The blastocoele also allows blastomeres to move during the process of gastrulation.
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| 4. | This may also happen by the fusion of the first two blastomeres.
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| 5. | Fertilized eggs are sufficiently large to perform microinjections and blastomere isolations
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| 6. | This contact is required to distinguish one macromere as the official D quadrant blastomere.
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| 7. | The fate of the first cells, called blastomeres, is determined by its location.
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| 8. | Within the blastula, inner blastomeres are generally non-polar while epithelial cells demonstrate polarity.
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| 9. | Once specified, the D blastomere signals to surrounding micromeres to lay out their cell fates.
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| 10. | This layer forms in the extracellular matrix and functions as an adhesive substance for the blastomeres.
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