Yolk cells

If the zygote is not from a placental mammal, then it is the egg yolk that supplies the nutrients to the fertilized egg. But actually nutrients ... till the blastocyst stage (the cell is just being divided into individual cells - DNA duplication and cytokinesis). Upon gastrulation, then development ...

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... "has nucleus" and a labeled vegetal pole that says "has yolk + food". Does that mean that the nucleus is ONLY found in the Animal ... experiment. When a horizental cut is done to the second cell stage, 4 cells form (2 balls of celiated cells, and 2 cells that can't form a complete ...

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... "has nucleus" and a labeled vegetal pole that says "has yolk + food". Does that mean that the nucleus is ONLY found in the Animal ... experiment. When a horizental cut is done to the second cell stage, 4 cells form (2 balls of celiated cells, and 2 cells that can't form a complete ...

See entire post