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Snapdragons (Antirrhinum majus) are flowering plants that are common in North Carolina. Snapdragons can be white or red. Devise an experiment to determine which color is dominant. What type of data would you look for to determine dominance?A white flowering snapdragon was crossed with a red flowering snapdragon and all of the offspring produced pink flowers. Does this data fit your prediction? Explain.Explain how pink flowering plants were produced.What would happen if I crossed two pink flowering plants?This type of inheritance is called incomplete dominance because neither trait is dominant over the other. The heterozygous offspring produced show a blending of the two parents’ traits.Another type of inheritance pattern that does not seem to follow Mendel’s rule of dominance is called codominance. When traits are codominant, both alleles are dominant and the heterozygous offspring display both traits. So, if flower color was codominant in snapdragons, when you crossed white flowering plants with red flowering plants you would get plant flowers that had both white and red pigments in them. Complete the following practice problems:In a certain breed of chickens (called Erminette), black feathers and white feathers are codominant. What would be the phenotype of the heterozygous offspring? (How would it look?)The heterozygous Erminette chicken is called “checkered” because of the white and black patterns of its feathers. Use a Punnett square to predict what would happen if you crossed two checkered Erminette chickens.How many different color chickens are there in the word? Look it up and make a list: How many different color snapdragons are there in the world? Look it up and make a list: Does incomplete dominance and codominance explain all of the variation seen in flower and feather color? Why ................
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