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RNA structure differs from DNA in that it contains the nitrogen base _____ in place of thymine.
skin and onion
Lila wanted to observe the process of mitosis. She could see this in what kind of cell types.
The process of an organism passing on its traits to its offspring is called ______________.
the red flower allele is dominant
Robert crossbreeds two plants, one with red flowers and one with white flowers. Weeks later the offspring plants produce red
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