90. Which of the following will be LEAST affected by a mutation in the DNA sequence?
    A. The ability of the DNA to replicate.
    B. The translation of mRNA into proteins.
    C. The transcription of DNA into mRNA.
    D. The chosen anticodon of the tRNA.

The ability of DNA to replicate is often the least affected by a mutation in the DNA sequence. DNA replication is a highly regulated process with built-in proofreading mechanisms, so even if there are minor mutations, the replication machinery often compensates, ensuring that DNA can still be faithfully copied.

On the other hand, mutations can significantly impact the translation of mRNA into proteins and transcription of DNA into mRNA. A change in the DNA sequence may lead to incorrect mRNA transcription, and therefore alter the sequence of amino acids in proteins, potentially disrupting their function altogether. So, watch out for those sneaky mutations!