What happens during cleavage?
A) The neural tube-precursor of the spinal cord and brain-forms.
B) Basal and apical cells-precursors of the suspensor and embryo,respectively-form.
C) The fertilized egg divides without growth occurring,forming a ball of cells.
D) Massive movements of cells make the primary body axes visible and organize the three embryonic tissues.
Correct Answer:
Verified
Q15: In Xenopus embryos,which developmental sequence is correct?
A)neurula,blastula,gastrula,cleavage
B)cleavage,neurula,gastrula,blastula
C)gastrula,neurula,cleavage,blastula
D)cleavage,blastula,gastrula,neurula
E)cleavage,gastrula,blastula,neurula
Q16: Where do you suppose the first microtubules
Q17: During early cleavage in animal embryos,minimal growth
Q18: During organogenesis,the first organ system to begin
Q19: What happens during gastrulation?
A)The neural tube-precursor of
Q20: Sperm-egg interactions are species-specific in sea urchins,but
Q21: Given the relative positions of the three
Q22: A sea urchin egg has a membrane
Q23: The cells of the somites are determined
Q24: During fertilization in sea urchins,the protein bindin
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents