From the National Humane Genome Research Institute website: “DNA Day is a unique day when students, teachers and the public can learn more about genetics and genomics! The day commemorates the completion of the Human Genome Project in April 2003, and the discovery of DNA’s double helix. This year, NHGRI will celebrate National DNA Day on April 20, 2012.”
We are reducing our price on DNA-related apps to 99¢ for the day. The apps to be priced at 99¢ on April 20 are:
OnScreen DNA Model for iPad (regularly $3.99)
OnScreen Gene Transcription for iPad (regularly $3.99)
OnScreen DNA Model for iPhone (regularly $2.99)
OnScreen DNA Model on the Mac App Store (regularly $3.99)
The OnScreen DNA Model apps focus on the details of DNA’s double helix structure, using a 3D, color-coded, virtual model that the user can rotate and zoom. Explanatory text deals with the molecules and chemical bonds of the double helix. Animations show two important lab phenomena of DNA: denaturation, in which the strands separate, and renaturation, in which they reunite.
OnScreen Gene Transcription makes use of the same DNA model to show how a genetic recipe stored in the sequence of molecules of DNA is copied by construction of a messenger RNA molecule. The various steps in the process, shown in animations, are described in some detail, emphasizing the role of certain enzymes.
The apps show details of structure and process that are sometimes depicted in erroneous ways in places that should know better. Discussion of the chemistry involved is at an introductory level, so the apps are useful for learning about DNA to a wide range of students or anyone interested in the science of Life.