Bloody Madness! - As the doctor in charge of the ER, you must provide your patients with the right types of blood for transfusion. Match donors with recipients before time runs out or there will be fatal consequences! Punnet Squares & Pea Crosses - This demonstration lets you cross pea plants Gregor Mendel style and produce offspring that exhibit a variety of traits. Simply pick the genotypes of the parents and the simulation will generate a punnet square for you to display the results of the cross. Transcription Demonstration - Using the given DNA base sequence, can you decode the genetic data to make an amino acid chain? Linkage Maps - Given recombinance frequencies between genes on a chromosome create a linkage map. This demonstration makes a fun logic game! The DNA Guy Note for Macintosh users: due to conflicts with the Netscape Virtual Machine, these programs are best viewed using Microsoft Internet Explorer.