RNA splicing occurs after transcription but before translation.  This statement is:

The coding strand of a gene in a eukaryotic cell has the structure below (UTR = Untranslated Region; E=Exon; I=Intron).  Exon 2 encodes protein structure that can act as a repressor and Exon 3 encodes protein structure that can act as an activator.  Which of the following mRNAs could produce a protein that decreases the expression of a gene that leads to cancer? 5′- Promoter – UTR – E1 – I1 – E2 – I2 – E3 – I3 – E4 – I4 – E5 – UTR – 3′

What may be the primary mechanism in the evolution of proteins that are composed of domains derived from different ancestral genes?

What bond is responsible for the branch points in glycogen and amylopectin?

Here is the sequence around the translation initiation codon (AUG) of a human mRNA: 5’—-AAGGGAUGGAACCUAGC….—-3’ You have isolated a mutant version of the gene encoding this mRNA that contains a frameshift mutation.  A one base pair insertion (base pair is underlined) occurs after the start codon (AUG). This change generates the mRNA shown below: 5’—-AAGGGAUGGAAACCUAGC….—-3’   This mutation will cause a premature stop in:  

  In mice, the mature mRNA above can be translated into the protein TF1.  Which splicing pattern would most likely result in the mature mRNA that codes for the protein TF1 in rabbits?

An intron contains the termination codon UAA. Does this termination codon interrupt the coding of the protein made from this gene?

A peptide with 200 amino acids contains

You discover alien life with a genetic system based on a DNA-like molecule, but it has 6 bases instead of 4 as happens on Earth. The proteins on the planet are built from combinations of 30 possible amino acids. What would be the minimum number of bases in each codon on this planet?

Here is the genetic code table once more: