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10. A student encounters an animal embryo at the eight-cell stage. The four smal

ID: 266152 • Letter: 1

Question

10. A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo are parallel to the vertical axis of the embryo. If we were to separate these eight cells and attempt to culture them individually, then what is most likely to happen? A) All eight cells will die immediately. B) Each cell may continue development, but only into an inviable embryo that lacks many parts. C) Each cell may develop into a full-sized, normal embryo D) Each cell may develop into a smaller-than-average, but otherwise normal, embryo. E) A teratoma would develop in the embryo

Explanation / Answer

(B)After separation from the blastomere,each cell have the tendency to develop continuously in the medium ,but the resulting in the inviable embryo that lacks many parts .It is because every cell have a fate for the formation of a specific part of embryo, after separation individual cell grows normally but can't make the complete embryo.As the embryo is made up from the complete 3 germ layers that would be formed from each cells of blastomere.So after separation it become difficult to derive these germ layers of embryo.