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Which statement correctly describes how RNA differs from DNA?
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7. DNA and Chromosome Structure
RNA
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In introductory genetics, which answer best describes the major types of RNA involved in gene expression?
A
Three major types: mRNA, tRNA, and rRNA
B
Four major types: mRNA, tRNA, rRNA, and dNTP
C
Two major types: DNA and RNA
D
One type: RNA exists only as mRNA
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Understand that gene expression involves the process of transcribing DNA into RNA and then translating RNA into proteins.
Identify the major types of RNA that play distinct roles in gene expression: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA).
Recall that mRNA carries the genetic code from DNA to the ribosome, where proteins are synthesized.
Recognize that tRNA brings amino acids to the ribosome during protein synthesis, matching the mRNA codons with the correct amino acids.
Know that rRNA is a structural and catalytic component of ribosomes, facilitating the assembly of amino acids into protein chains.
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