Gel Electrophoresis

Looking at a sample of purple dye, how can you know if it is really purple? Could it be a mixture of blue and red dyes? Electrophoresis is a technique used in many areas of science to analyze and separate samples by applying a constant electric field across a separation matrix. Biologists or forensic scientists … Continued

Experimental Design

The best way to test a hypothesis is through controlled, systematic, and reproducible experiments. Proper experimental design is critical for obtaining usable, reliable, and applicable data. There are two important components to be considered: variables and controls. Variables Variables are the conditions and components that are changeable and controllable during an experiment. There are both … Continued

Congratulations to ASHG DNA Day Contest Winners

Results are in and we would like say CONGRATULATIONS! to ASHG DNA Day Essay Contest winners   This year’s ASHG DNA Day Essay contest boasts submissions from 44 states and 23 foreign countries. This contest challenges students to examine, question, and reflect on important ideas and issues related to human genetics. Competitive essays are expected to … Continued

Discovery of the DNA Structure

On this day April 25 in 1953, James D. Watson, Francis Crick, Maurice Wilkins, Rosalind Franklin and their colleagues published the first article that described the double-helix DNA structure in the scientific journal Nature. This short, one page article titled, “Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid” was the key to understanding the chemical … Continued