Textbook Question
Describe an rDNA experiment in two or three sentences. Use the following terms: intron, exon, DNA, mRNA, cDNA, RNA polymerase, reverse transcriptase.
15. Central Dogma & Gene Regulation
Eukaryotic RNA Processing and Splicing
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
The regions in DNA & RNA that encode actual gene products are known as:
A
Terminators.
B
mRNA.
C
Exons.
D
tRNA.
E
Promoters.
Verified step by step guidance1
Understand the structure of DNA and RNA: DNA and RNA are composed of sequences of nucleotides. These sequences include regions that encode for proteins and regions that do not.
Identify the regions that encode gene products: In both DNA and RNA, the regions that directly encode for proteins are known as exons. Exons are the sequences that are transcribed into mRNA and then translated into proteins.
Differentiate between exons and other regions: Exons are distinct from introns, which are non-coding regions that are removed during RNA processing. Other regions like promoters and terminators play roles in the regulation of gene expression but do not encode proteins.
Clarify the role of mRNA: mRNA is the messenger RNA that carries the genetic information from DNA to the ribosome, where it is translated into a protein. It is synthesized from exons.
Review the function of tRNA: tRNA is transfer RNA, which helps in the translation process by bringing amino acids to the ribosome. It does not encode gene products but is essential for protein synthesis.
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