Yep, you guessed it! Chromosome 17. There are normally 23 pairs of chromosomes in a human cell (46 total). For our genetics test on Halloween, 45 of my classmates and I dressed up as chromosomes. It was awesome!
In the picture my friend and I are demonstrating the phenomena called crossing over. When a cell decides to divide, the chromosomes condense and line up. They are then pulled apart to provide the same amount of genetic information to both of the cells. Before the chromosomes are pulled apart, matching regions between the chromosomes can intersect, or cross over, causing them to exchange genetic material (DNA).
If you think about it, we humans often experience these "crossing over" events in our lives. We meet someone, exchange a few words, and complete some task together. The impact of these interactions may be large or small, but neither person leaves the same as they came. While those around us don't definitively determine who we become, they certainly leave their mark. My question today is, what kind of impact are you and I having on those around us? When I cross paths with another person, I want to leave a mark of goodness, positivity, and hope.
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