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Biology, 30.01.2020 19:51 please1133

Anne has been observing human embryos in different stages. she wants to study the gastrula phase. how will she find it? by looking for the presence of the neural tube and the notochord in the embryo by looking for the presence of the germ layers and the primitive gut in the embryo looking for the presence of the heart and lungs in the embryo

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