Among a species of butterflies, the color blue (b) is a dominant trait. yellow color (b) is a recessive trait. if a pure blue butterfly (bb) mates with a pure yellow (bb), what traits will the offsprings would have? a). they will all be blue. b). they will all be yellow. c). half will be blue and half will be yellow. d). about 75% will be blue and 25% will be yellow.