Which cells of the pancreas produce glucagon?
a. alpha cells
b. beta cells
c. delta cells
d. F cells
e. gamma cells
A
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How is the rho protein triggered in rho-dependent termination of prokaryotic transcription?
a. Rho protein encounters a region rich in C-G nucleotides and a stable hairpin forms. b. Rho protein is triggered by the ?’ subunit of polymerase. c. A run of G nucleotides will stall polymerase and rho protein collides with it from behind. d. Upstream nucleotides in a pattern of TATAAT triggers the rho protein to bring polymerase to a halt.
Sickle cell anemia is caused by a missense mutation. Indicate whether the statement is true or false
The X and Y chromosomes ____
a. are responsible for autosomal recessive inheritance b. will lead to color-blindness in all carriers c. are found paired with all 22 autosomal chromosomes d. are responsible for albinism e. play major roles in determining the sex of an individual
During gametogenesis, what percentage of gametes would be aneuploid if the nondisjunction event occurs during meiosis I?
What will be an ideal response?