Which statement best describes what causes an organism to change over time? Why does the sequoia tree have leaves and bark, why doesn’t it look like a really big seed?
1. Cells gain new DNA as they grow, so as the DNA changes, it gets the new instructions it needs to build the complex tree
2. All the cells of the sequoia tree have the same DNA, but different genes on the DNA are expressed (or turned on), creating specialized cells
3. All the cells of the sequoia tree are unique and have different DNA, you have billions of cells, each with different instructions to turn into a complex organism
4. We have between 20-200 different types of cells each with its own DNA. Those different cells divide and spread their different DNA to various types of the body
5. Both A and D
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Which statement best describes what causes an organism to change over time? Why does the sequoia tre...
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