| 11. | He then observed how the remaining blastomere developed, and found that it became a half embryo.
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| 12. | Most of the blastomeres in this stage become polarized and develop tight junctions with the other blastomeres.
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| 13. | Most of the blastomeres in this stage become polarized and develop tight junctions with the other blastomeres.
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| 14. | In stage 3, during the second cleavage, an unequal division occurs in the CD blastomere.
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| 15. | Mintz went on to create viable chimeric embryos containing blastomeres from up to fifteen different laboratory mice.
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| 16. | After four divisions, the conceptus consists of 16 blastomeres, and it is known as the morula.
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| 17. | Each blastomere produced by early embryonic cleavage does not have the capacity to develop into a complete embryo.
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| 18. | In twinning assays, molecules are injected into the ventral blastomere of a four-cell stage embryo.
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| 19. | Further segregation of blastomeres into the trophoblast and inner cell mass are regulated by the homeodomain protein, Cdx2.
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| 20. | This polar lobe forms at the vegetal pole during cleavage, and then gets shunted to the D blastomere.
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