In humans, having freckles (F) is dominant to not having freckles (f). Having a cleft chin (C) is also dominant to not having a cleft chin (c). Which statement is true of the offspring of a cross between parents that are both heterozygous for both traits (FfCc)

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Biology

Dana Fleming

26 September, 11:34

In humans, having freckles (F) is dominant to not having freckles (f). Having a cleft chin (C) is also dominant to not having a cleft chin (c). Which statement is true of the offspring of a cross between parents that are both heterozygous for both traits (FfCc)

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Sterling · Answer 1

9:3:3:1

that is the phenotype ratio

9/16 is gonna have freckles and cleft chin (dominant traits)

3/16 is gonna have freckles and no cleft chin

3/16 is gonna have cleft chin but no freckles

1/16 is gonna have no freckles and no cleft chin (recessive traits)

take R as freckles and dominant, r as recessive and no freckles

take Y as cleft chin dominant, y as no cleft chin recessive and substitute