It's easy to calculate how many genes you share with your parents, children, siblings, and other relatives. Given the fact that parents pass half of their genes to their children, and siblings share half of their genes, the rest is just math. To determine this, you just have to divide genetic relatedness each time you go up or down a step in a family tree, or sideways. For … [Read more...] about How many genes do you share with your relatives?
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From where do trees get their mass?
As a kid, I remember, I was fascinated with how a tree can grow from a tiny seed. I wondered where their bodies came from and how trees get their mass if it obviously is not stored in the seed? My assumption at the time was that all that stuff must come from the soil, but damn, I was wrong. Years later, when I studied biology, I learned that Jan Baptist van Helmont, a … [Read more...] about From where do trees get their mass?