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Q15: A researcher studying frog development finds that
Q37: Refer to the figure showing some of
Q54: During gastrulation in amphibian embryos, the movement
Q57: In the mammalian blastocyst, pluripotent stem cells
Q91: In mammals, sperm-binding molecules are located in
Q160: The "water breaking" often marks the onset
Q173: The _ eventually develop into vertebrae, ribs,
Q177: Which cells are produced from mitotic divisions
Q243: Which behavior results from the adaptation of
Q257: In developing humans, the first trimester is