I like David’s answer. Especially the bananas.
Our best guess is that ALL life on our planet is related. One thing that tells us that (apart from DNA) is what are called stereo isomers; complex molecules (like carbohydrates we need for food) can exist in two mirror image shapes, and our body uses other chemicals called enzymes to break them up so we can use them. And enzymes can only work on one of those shapes, so if a plant or animal produced the other shape, we could eat it but not use the energy from it; fortunately we all use the same version.
Sure thing, we share about 98% of our genome with them. But we also are similar to bananas (50%) and cows (80%).
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I like David’s answer. Especially the bananas.
Our best guess is that ALL life on our planet is related. One thing that tells us that (apart from DNA) is what are called stereo isomers; complex molecules (like carbohydrates we need for food) can exist in two mirror image shapes, and our body uses other chemicals called enzymes to break them up so we can use them. And enzymes can only work on one of those shapes, so if a plant or animal produced the other shape, we could eat it but not use the energy from it; fortunately we all use the same version.
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