#Question id: 5685
#Unit 5. Developmental Biology
Human sperm are allowed to fertilize ova having non- functional ovastacin. The following possibilities may be of significance in the fusion of these gametes:
A. The sperms will not fertilize ova.
B. The sperms will bind and penetrate the zona pellucida but will not be able to fuse with ovum membrane.
C. ZP2 will not be clipped by cortical granule protease.
D. CD9 protein of egg membrane microvilli will not be able to interact sperm membrane proteins in the absence of ovastacin.
E. Polyspermy may occur frequently.
Which combination of statements represent the outcome of the above event?
#Question id: 93
#Unit 1. Molecules and their Interaction Relevant to Biology
What type of bond links the monomers of a polysaccharide?
#Question id: 12277
#Unit 7. System Physiology – Animal
#Question id: 23318
#General Aptitude
#Question id: 4708
#Unit 11. Evolution and Behavior
The following questions refer to the figure below, which shows an outcrop of sedimentary rock whose strata are labeled A-D. If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?