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Bio 101: Harvard
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Avg score: 41% • Most missed: “1. Ectoderm 2. Endoderm 3. Mesoderm”
Bio 101: Harvard
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2 Questions

1. 1. Ectoderm 2. Endoderm 3. Mesoderm

2. Shifts mean towards one extreme (positive selection) ie long horned cows

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