Multiple Choice
What is a major difference between the development of Drosophila or Xenopus and that of humans?
A) Drosophila and Xenopus do not undergo gastrulation;humans do.
B) Drosophila and Xenopus undergo metamorphosis;humans do not.
C) Drosophila and Xenopus do not show development of germ layers;humans do.
D) In Drosophila and Xenopus,the notochord remains;in humans,it disappears.
E) Drosophila and Xenopus do not undergo blastula formation;humans do.
Correct Answer:
Verified
Correct Answer:
Verified
Q18: Sperm-egg interactions are species-specific in sea urchins,but
Q21: What happens during cleavage?<br>A)The neural tube-precursor of
Q22: Many amphibian species release their sperm and
Q23: Given the relative positions of the three
Q24: What do fertilization envelopes and mammalian enzymes
Q25: Scientists using RNA hybridization techniques found that
Q27: What is the role of calcium signalling
Q28: During gastrulation,mesoderm is found between the ectoderm
Q29: Figure 22.1 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3733/.jpg" alt="Figure 22.1
Q31: Spina Bifida is one of the most