Question

In camellia plants, flower color is controlled by a single gene with codominant alleles. A camellia plants with red flowers (RR) is crossed with a camellia plant with white flowers (WW). What are the expected phenotypes of the offspring of this cross?

A.
Half will have red flowers and half will have white flowers.
B.
All will have both red and white flowers.
C.
All will have pink flowers.
D.
All will have red flowers.

Answer 1

Correct answer is - C All will have pink flowers.
Why? - Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. In codominance, however, neither allele is recessive and the phenotypes of both alleles are expressed. Each parent = Red + White = Pink.