Multiple Choice
Which of the following best describes the typical number of strands found in a molecule of RNA?
3
views
7. DNA and Chromosome Structure
RNA
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which form of genetic material initiates RNA interference (RNAi) in eukaryotic cells?
A
Single-stranded DNA (ssDNA)
B
Transfer RNA (tRNA)
C
Double-stranded RNA (dsRNA)
D
Messenger RNA (mRNA)
Verified step by step guidance1
Understand that RNA interference (RNAi) is a biological process in eukaryotic cells where RNA molecules inhibit gene expression by neutralizing targeted mRNA molecules.
Recall that RNAi is typically initiated by the presence of double-stranded RNA (dsRNA), which is recognized by the cellular machinery.
Know that dsRNA is processed by an enzyme called Dicer into small interfering RNAs (siRNAs), which guide the RNA-induced silencing complex (RISC) to complementary mRNA targets.
Recognize that single-stranded DNA (ssDNA), transfer RNA (tRNA), and messenger RNA (mRNA) do not initiate RNAi because they do not form the double-stranded structures required to trigger this pathway.
Conclude that the form of genetic material that initiates RNA interference in eukaryotic cells is double-stranded RNA (dsRNA).
Related Videos
Related Practice
