Question

During an experiment, a scientist crosses a pea plant that has purple flowers with a pea plant that has white flowers. The plants that result from this cross in the F1 generation have both purple and white flowers. What can the scientist conclude?
A. White flowers are dominant over purple flowers.
B. Neither purple flowers nor white flowers are dominant.
C. The plants in the P generation were not true-breeding.
D. All the plants in the F2 generation will have purple flowers.

Answer 1

Well B because they both sprouted White and Purple meaning neither are dominate enough to cross each other out!

Answer 2

Answer:

The correct answer would be B. Neither purple flowers nor white flowers are dominant.

It can be explained with the help of codominance.

Codominance is a situation in which both the alleles of a gene are equally dominant and express themselves completely in a heterozygous condition.

For example, in ABO blood group system allele $I^{A}$ and $I^{B}$ are codominant while $i$ is recessive.

Similarly, in the above experiment purple and white flower color trait are codominant or we can say that neither is dominant over each other.