Of substances along this axis, with pigment granules often concentrated In many eggs there is also a graded distribution During meiosis of the oocyte the polar bodies areĮxpelled at animal pole. ![]() Pole, with the animal-vegetal axis between the poles passing through To the nucleus is the animal pole, and the other is the vegetal Pole-In most animal oocytes the nucleus is not centrally placedĪnd its position can be used to define two poles. Injected with thyroid or pituitary gland extract.Īnimal cap-Pigmented animal hemisphere of the amphibian blastula. The neotenous,Īquatic axolotl will metamorphose into the terrestrial form if May retain the larval form, but can reproduce. Growth of cells, particularly bacteria and some cancer cell lines.Īxolotl (amphibian). ![]() From seaweed (Rhodophyceae) and used as an inert support for the
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