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DNA (Deoxyribonucleic acid)
A complex chemical that contains information about every part of an organism
What did Gregor Mendel do?
Through the selective cross-breeding of common pea plants (Pisum sativum) over many generations, Mendel discovered that certain traits show up in offspring without any blending of parent characteristics. For instance, the pea flowers are either purple or white--intermediate colors do not appear in the offspring of cross-pollinated pea plants
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