In normal cells, genes are expressed, whereas in cancerous cells the normally expressed genes are turned off by epigenetic modifications. How could you reverse the epigenetic modifications to turn the genes back on?

Several human diseases are caused by an error in mRNA splicing. Explain why this occurs.

What are regions 1 through 5 in the diagram?

Alternative splicing has been estimated to occur in more than 95% of multi-exon genes. Which of the following is not an evolutionary advantage of alternative splicing?

How can understanding the gene expression pattern in a cancer cell tell you something about that specific form of cancer?

Several human diseases are caused by an error in mRNA splicing. Explain why this occurs.

The ends of chromosomes are called ________.

Alternative splicing has been estimated to occur in more than 95% of multi-exon genes. Which of the following is not an evolutionary advantage of alternative splicing?

The E. coli bacteria can have several mutations that affect the lac operon system. One mutation inhibits the ability of RNA polymerase to bind to the lac operon. How would this affect the cell?

Based on the graph above, the color of male guppies can be seen as a balance between positive and negative selections.  Bright colors are an advantage in ________, but a disadvantage in ________.