Question

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)

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