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Unusual vaginal bleeding (usually post-menopausal) is the most common sign/symptom of endometrial cancer.

All codons of an mRNA, including “STOP” codons, are recognized using Watson-Crick-Franklin base-pairing interactions with a corresponding tRNA.

Match the type of cancer to the correlating most common presenting sign/symptom.

For the Lac operon, a cell grown in “high lactose+no glucose” will have the same lac gene expression as a cell grown in “high lactose+ high glucose”.      

For Translation, both Prokaryotes and Eukaryotes use base-pairing interactions with a sequence on mRNAs called the “Shine-Delgarno” to determine which start codon to initiate from.

DNA polymerase has a separate “proofreading active site” that can correct mis-incorporated nucleotides, while RNA polymerase performs proofreading at the same active site that is used for polymerization.

Which of the following is NOT TRUE of RNA.

In Prokaryotes, rho-dependent transcription termination involves formation of a hairpin RNA secondary structure.

You measure the melting temperature of two DNA samples, X and Y, of identical length but unknown base-compositions. You find the Tm of X is 60 and the Tm of Y is 50. Which of the following statements about their base-composition is true:

A region of DNA is shown below. The coding strand is highlighted in red and the template strand in black:       When transcribed by RNA polymerase, the resulting mRNA sequence would be: