What is the role of the U1 snRNP?
What will be an ideal response?
Ans: The U1 snRNP initiates the splicing reaction by binding to the 5? splice site of an intron. This binding involves RNA-RNA base pairing between an snRNA of U1 and the 5? splice site. U1 then recruits additional splicing factors.
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In the TCA cycle, two carbons in the form of ________ are added to oxaloacetate at the start of the cycle.
A. methanol B. acetyl-CoA C. ethanol D. carbon dioxide
The dark shadings in the above map show the distribution of ________ across the world
A) primary economic activities B) secondary economic activities C) tertiary economic activities D) localization economies E) backwash effects
A nonfunctional gene near a similar but functional gene is called a(n)
A) pseudogene. B) expanded gene. C) phenocopy. D) transposon.
In which type of mammal do a mother and her embryo exchange materials by means of an organ developed from embryonic membranes?
A. Monotremes B. Egg-laying C. Pouched D. Marsupial E. Placental