Question

modeling mutations quick check
how are dna and mrna related? (1 point)
○ if there has been a mutation in dna, the mrna will not change.
○ if there has been a mutation in mrna, the dna will not change.
○ dna is used as a template to make mrna.
○ mrna is used as a template to make dna.

Explanation:

• Option 1: DNA mutations can lead to mRNA changes. For example, a substitution in DNA can cause a different nucleotide in mRNA during transcription. So, this option is incorrect.
• Option 2: mRNA is synthesized from DNA. Mutations in mRNA are not passed back to change the DNA (in normal cellular processes, not considering reverse - transcriptase in some viruses). This is a correct statement.
• Option 3: Transcription is the process where DNA is used as a template to synthesize mRNA. This is a fundamental biological process and is correct.
• Option 4: In normal cellular processes (not in reverse - transcription by reverse - transcriptase in some viruses like retroviruses), mRNA is not used as a template to make DNA. So, this option is incorrect.

Between options 2 and 3, the question is about the general relationship. The most fundamental relationship is that DNA is used as a template to make mRNA.

Answer:

DNA is used as a template to make mRNA.