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6-12

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Mendel's Laws of Genetic Inheritance

This interactive activity, adapted from the Dolan DNA Learning Center, illustrates how a tool developed by scientist Reginald Punnett — the Punnett square — validates Gregor Mendel's laws of genetic inheritance. Watch how the Punnett square can be used to display the possible genetic outcomes when two yellow-seed hybrid pea plants are crossed. The results clearly illustrate Mendel's principle of dominance and why the potential offspring traits appear with a predictable 3-to-1 dominant-to-recessive frequency.

This media asset was adapted from Genetic inheritance follows rules. by Cold Spring Harbor Laboratory, Dolan DNA Learning Center.

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