Question

Two pink flowering plants are crossed. The offspring produce flowers as follows: 25% Red, 25% White and 50% pink. What pattern of inheritance is shown by the flower color in these plants?

Answer 1

Incomplete dominance

Step-by-step explanation:

Incomplete dominance is a type of non-mendelian inheritance in which two alleles of a gene is neither dominant nor recessive over one another, hence, they form an intermediate third phenotype, which is a blending of both phenotypes.

In this question, the allele for red flower (R) in a certain flowering plants is INCOMPLETELY DOMINANT over the white allele (r). Hence, a pink (Rr) flower color is formed, which is heterozygous. However, if two pink flowering plants are crossed, the offspring produce flowers as follows: 25% Red (RR), 25% White (rr) and 50% pink (Rr). This depicts INCOMPLETE DOMINANCE.