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Shown below is an alignment of the first half of the γ-globin gene and mature mRNA sequences. The mRNA and aligned protein sequences are interrupted in the gene by a 130-nucleotide intervening sequence (intron). Locate the 5′ splice junction (invariant bases) and click on it.

Click on the DNA end where you would expect to find the most recently synthesized RNA primer in this replication fork.

Choose the description that is most consistent with the definition of semiconservative DNA replication.

Given the codon and anticodon tables below, write one tRNA anticodon (5′-3′) that can pair with the indicated codons. codon anticodon tables.jpg Answer choices: A C G I U    Anticodon description Anticodon 5′ base Anticodon middle base Anticodon 3′ base    Pairs with all Ile codons [BLANK-1] [BLANK-2] [BLANK-3]    Pairs with both Lys codons [BLANK-4] [BLANK-5] [BLANK-6]    

Inhibition of which of the following enzyme activities is most likely to result in the build-up of Okazaki fragments?

Select the best thermodynamic explanation for the lowering of Gibbs free energy upon annealing of two complementary strands of single-stranded DNA to form a double-stranded DNA helix.

Identify the cis-acting element that serves as the foundation upon which the transcription initiation complex of many genes is built.

Classify the fundamental unit of the nucleic acid starred in the figure below. ATG.png 

Inactivation of the 3’-5’ exonuclease activity of DNA polymerase III disables the proofreading mechanism of this enzyme. The result will be

Both RNA and DNA can form double helices. Propose the most likely chemical component of RNA that influences it to form a right handed A helix as opposed to the right handed B helix, which is the most common form of DNA.