#Question id: 5121
#Unit 5. Developmental Biology
Following statements are being made regarding ‘stem cells. Which statement is incorrect?
#Question id: 4926
#Unit 8. Inheritance Biology
Shell coiling in snail is determined by genetic maternal effect for a single loci having D allele for dextral coiling but S allele for sinistral coiling. D dominant over S. which of the following cross would produced all progeny that is dextral coiling ?
I- DD Male X SS female
II- DD Male X DS female
III- SS Male X DD female
IV - DS Male X DS female
#Question id: 5648
#Unit 5. Developmental Biology
Use the following information to answer the question. In order to test how sea urchin sperm bind to eggs, scientists isolated the egg receptor protein that binds to the sperm acrosomal protein called bindin. Plastic beads were coated with egg receptor for bindin (ERB1) from eggs of the sea urchin Strongylocentrotus purpuratus, and then the beads mixed with sperm from S. purpuratus or from the related species, S. franciscanus. The researchers counted how many sperm were bound to each bead. The results are shown in the graph below. Treatments:
A: S. purpuratus sperm mixed with S. purpuratus ERB1 beads
B: S. purpuratus sperm mixed with beads containing no ERB1 protein
C: S. franciscanus sperm mixed with S. purpuratus ERB1 beads
D: S. franciscanus sperm mixed with beads containing no ERB1 protein
What is a broader implication from the observations of the experiment?
#Question id: 837
#Unit 1. Molecules and their Interaction Relevant to Biology
Increasing order of free energy in unfolded to folded conformation of the proteins, the correct order is,
#Question id: 30068
#Unit 7. System Physiology – Animal
Norepinephrine secreted by the sympathetic endings binds to β1 receptors, and the resulting: