In humans, there is a gene that controls the formation of muscles in the tongue that allow people with those muscles to roll their tongues, while people who lack those muscles cannot roll their tongues. The ability to roll one's tongue is dominant over non-rolling. Which ratio accurately represents the genotypes of the offspring that would result between two heterozygous rollers? A 1:2:1 C1:1:1:1 B 1:1 O 3:1

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