With respect to microRNAs, which, if any, of the following statements, is false?

a) A microRNA normally works by binding to perfectly complementary sequences within an RNA transcript, usually an mRNA.

b) Like the great majority of mRNAs an miRNA is usually produced as a larger precursor RNA that is capped and has a 3’ poly(A) tail.

c) The precursor miRNA undergoes different types of post-transcriptional cleavage by endoribonucleases that are specific for double-stranded target sequences.

d) A nuclear endoribonuclease called dicer cleaves the miRNA precursor so that it forms a stem-loop RNA.

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#Question id: 5212

#Unit 11. Evolution and Behavior

Barbara McClintock, famous for discovering that genes could move within genomes, had her meticulous work ignored for nearly 4 decades, but eventually won the Nobel Prize. Why was her work so distrusted?

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#Question id: 5806

#Unit 8. Inheritance Biology

Which of these is NOT a mechanism by which a chromosome rearrangement could affect gene function?

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#Question id: 24141

#General Aptitude

METAPHOR : SYMBOL

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#Question id: 15714

#Unit 12. Applied Biology

Which component in the medium is reported to counteract the inhibitory effect of auxin and promotes bud formation in the absence of cytokinin.

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#Question id: 3034

#Unit 2. Cellular Organization

Cyanobacteria are