What is epigenetics?

Imagine you have the following operon that includes the genes that encode enzymes A, B, and C, which are required for the biosynthesis of molecule X into Y in most bacteria.  The product of gene M regulates gene expression in this cell. When there is a high level of the M product, you do not detect any levels of A, B, and C enzymes but when there is a low level of the M product you detect higher levels of the enzymes. Thus, the product of the M gene is a:

  Based on the figure above, Gene 1 will is stimulated by which enhancer(s)?

_______  are those in which transcription is normally off ; something must happen to induce transcription, or turn it on.

What is the importance of RNA processing in bacteria?

From the mRNA sequence below, determine the amino acid sequence that corresponds to the mRNA sequence.   5’-CUGAUGAAAG ACACCCGCUG AGGA-3’  

Epistasis often results in modified dihybrid phenotypic ratios. Assume that you obtain one such modified ratio, 9:7, with the gene pairs A and B involved. What would be a possible genotype for a phenotype that would be included with the 9 portion of the modified ratio?

Forceful coughing can cause rib fractures?

Forceful coughing can cause rib fractures?

A respiratory therapist is assessing a breathing  unconcious patient and notices the SPO2 level on 2 liter nasal cannula is 86%. It is determined the patient is oversedated.  The most likely cause of the low SPO2 is: