Answer:I think it’s answer D-Were formed by water based solution , water makes everything more flat and smooth , I’m not sure though
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Transitional epithelium has dome shaped cells on the apical surface.
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I don't understand it I am so sorry
The fertilized egg begins a rapid descent to the uterus. The period of rest in the tube appears to be necessary for full development of the fertilized egg and for the uterus to prepare to receive theegg. ... At the end of this transition period, the embryo becomes a mass of very organized cells, called a blastocyst.
