go online and look up ressesive and dominate Gene's and Gregory Mendel he crossbreed plants such as what you have described and have found some interesting results that do include your red and white crossbreeding to create pink. this is usually called a Punnet Square.
dominate gene
Red = R
White = W
recessive gene
Red=r
White = w
pink is either a mixture of recessive and dominant Gene's or one dominant and one recessive
