Answer:
CO-DOMINANCE
Explanation:
Mendel discovered organisms to possess two contrasting forms of a gene called ALLELE. However, in his LAW OF DOMINANCE, he stated that one allele is capable of masking the expression of another in the same gene. He called the allele that masked, DOMINANT allele while the allele being masked/covered, RECESSIVE allele.
Genetic scenarios that contradicts this Mendelian principle of dominance have been observed. One of them is this concept of CO-DOMINANCE, which is a state where one allele is neither dominant nor recessive to the other allele and hence, both becomes simultaneously expressed in the resulting organism. This is the case of the flowers described in the question where the two alleles coding for two different traits in the flower colour gene are both expressed at the same time. The two alleles are said to be CODOMINANT.
