1 during frog gastrulation cells ingress through the

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Unformatted text preview: a and d 9) Which of the following are members of the BMP signaling pathway? a) Chordin b) Nodal c) Smad2 d) Brachyury e) All of the above f) a and c g) b, c, and d 10) Which of the following are expressed in the organizer of the frog gastrula? a) Brachyury b) Chordin c) VegT d) Mix1 e) All of the above f) a and b g) b and c PART 2. TRUE/FALSE/AMBIGUOUS Are the following statements true, false or ambiguous (meaning the information provided is not sufficient to draw a conclusion)? Choose one answer for each question. 1. During frog gastrulation, cells ingress through the blastopore. T F A 2. A deuterostome is an organism that forms its anus first. T F A 3. The blastocoel is displaced by the archenteron during frog gastrulation. T F A 4. The chicken primitive streak is the equivalent of the frog blastopore. T F A 5. Germ layers are specified by both determinants and cell- cell interactions. 2/7/14 3 Biol 120 – Development Winter...
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This document was uploaded on 03/28/2014.

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