Blog

In the Sanger, or chain termination, method of DNA sequencing, incorporation of the nucleotides stops because

Entire genes may be deleted, inverted, replicated, or even translocated to another chromosome. Explain how each one could potentially result in cancer?

Genome size in eukaryotic organisms

What accounts for the fact that cells in different tissues and organisms have different functions and respond differently to their environments?

DNA extracted from hair, blood, or other bodily fluids and tissues from a crime scene can be used as evidence in a criminal case. What features of human DNA are typically used to “match” DNA found at a crime scene with the DNA of an individual?

The product of the bicoid gene in Drosophila is responsible for determining which of the following embryonic features or structures during development?

One cell sends second messengers to another cell through gap junctions. What type of signaling would this be considered? 

You have identified a molecule, molecule X, that can bind to the ATP-binding site of a specific protein kinase, and prevent ATP binding. You are conducting a kinase assay using this protein kinase and a known substrate of this kinase, and have set up the reaction using the proper conditions and cofactors to allow for optimal protein kinase activity. If you add molecule X to the reaction, what do you predict will be the outcome?

In response to injury, cell fragments called platelets get activated to induce clotting. Activated platelets release factors that can in turn bind to specific membrane receptors on nearby cells. What type of signaling would this be considered? 

Sequencing the genes of humans is important because