While the aminotic egg offers many advantageous, it also has limitations. Which of the following is a limitation of reproduction in amniotes? External fertilization is not possible in amniotes. Amniotic eggs must be laid in water or the embryos will dry out before hatching. Amniotes must be smaller than non amniotes at hatching because of the difficulty getting oxygen through the external membranes.

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A: 1 blank- Gap genes 2 blank- homeodomain

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Q: Explain the evolutionary advantage of the amniotic egg

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