If the Dorsal Lip of the Blastopore Is Transplanted from One

Multiple Choice

If the dorsal lip of the blastopore is transplanted from one frog gastrula onto a second frog gastrula on the opposite side from the embryo's original blastopore, which result is the most likely?

A) A belly piece will form.
B) Gastrulation will cease.
C) A second complete embryo will form belly-to-belly with the recipient of the transplant.
D) The transplant will be rejected.
E) Only half an embryo will develop at the site of transplantation.