In birds, males are homogametic sex (XX), females are heterogametic (XY). Light Sussex fowls have mostly white plumage (feathers), and Rhode Island fowls have mostly red. The character white-feathered (R) is dominant to the character red (). 2.1 Explain why, on mating Rhode Island cockereis with white Sussex hens, all male offspring have white plumage and all females red. [18]​

When mating the white feathered trait is dominate while the red feathered is resesive so both parents would have to have red feathers for there offspring to have red feathers.

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all soils contain mineral particles, organic matter, water and air the combinations determine the soil's properties – its texture, structure, porosity, chemistry and color. soil is made up of different-sized particles. sand particles tend to be the biggest.