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During REM sleep, which is most likely to occur? |
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Which illustrates a variable ratio schedule of reinforcement? |
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What is the function of the umbilical cord? |
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What are the endocrine functions of the placenta? |
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Is there exchange of cells between the mother and the fetus through the placenta? |
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What are the main substances transferred from the mother to the fetus through the placenta and from the fetus to the mother? |
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What is the chorioallantois membrane present in the embryonic development of reptiles and birds? How does this membrane participate in the energetic metabolism of the embryo? |
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Why can the amnion also be considered an adaptation to terrestrial life? |
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What is the difference between amnion and chorion? |
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Why can the allantois be considered an adaptation to terrestrial life? |
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Which is the extra embryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos? |
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How is the yolk sac formed? What is the function of the yolk sac? |
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Are the extra embryonic membranes the same in all vertebrates? |
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What are the extra embryonic membranes present in vertebrates? |
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What are extra embryonic membranes? |
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What is polyembryony? |
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What are twins? Genetically what are the two types of twins that can be generated? |
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From which germ layer do the liver and the pancreas originate? What are other organs and tissues made from that germ layer? |
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From which germ layer do blood cells originate? What are other organs and tissues made from that germ layer? |
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From which germ layer do the epidermis and the nervous system originate? What are other organs and tissues made from that germ layer? |
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