Irene Uchida's chromosome game

The object of this game is to match up a set of human chromosomes as fast as you can. Humans have 46 chromosomes in 23 pairs. You won't have to match all 23 pairs though. Some genetic diseases are due to accidental tripling of a chromosome when a fatherÕs sperm meets a motherÕs egg. Cytogeneticists diagnose this by examining chromosomes from blood under a microscope. They match chromosomes by comparing their length, the chromatin banding pattern and by the location of the narrow part. 

To make your job easier try rotating chromosomes by clicking on one and holding down the mouse button. Rotation stops when you release the button. You might line up all the chromosomes that donÕt match along the top of the screen, then systematically check them with the one in the box. 

Drag one chromosome into the grey box. Then try to find itÕs twin and drag it into the box. When you drag a chromosome into the box, its number appears on the top of the screen and it straightens out. If the chromosome doesnÕt match, it  bounces back out. It must be all the way into the box or it bounces out even if itÕs a match. Matched chromosomes disappear. Once a chromosome has moved into the box it canÕt be moved out. You have six minutes. Do it as fast as you can. Good luck!

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