A gene that encodes a tRNA changes the anticodon from 3′-GAG-5′ to 3′-CAG-5′. This mutation does not alter which amino acid that is attached to the mutant tRNA. What effect would this mutation have on translation?

If a mutant sigma factor binds very tightly to RNA polymerase, how might that affect transcription?

  Epigenetic changes may  

Which of the following phenomena could you study using ChIp-Seq?

The Avy allele of the Agouti gene involves the insertion of a transposable element upstream from the normal Agouti promoter. Let’s suppose that pregnant female mice are fed a diet that contains chemicals that increase DNA methylation. With regard to offspring carrying the Avy allele, this diet would

A gene encodes a pre-mRNA with 5 exons and 4 introns.  A mutation eliminates the 3’ splice site from intron 3. What exons would be found in the mRNA after splicing was completed?

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Which of following types of genetic sequences would come first in a gene?

For a riboswitch that controls translation, the binding of a small molecule such as TPP controls whether the RNA

A mutagen that alkylates bases is