"For instance, a cross between two pure plant breeds for a flower trait of contrasting colors (e.g. blue and white) would result in a progeny (offspring) that bears the two alleles (each inherited from its parents) coding for the blue and white flowers. However, this progeny would produce either blue or white flower. If for instance the dominant color for the flower is blue, then, the allele coding for blue flowers would be expressed whereas the allele for white flowers would not be expressed. In this case, the recessive trait (i.e. white flower) would only be expressed in a progeny when it acquires a pair of recessive alleles from its parents. "