Consider Mendel's experiments involving the trait of round versus wrinkled peas

Question

In some
experiments, Mendel's method involved removing the anthers that produce pollen from the
flowers of the round peas and applying pollen from the anthers of the wrinkled plant. What
would have happened if Mendel had missed some anthers he was trying to remove from the
flowers of the plants that produce only round peas, and observed the peas produced by a
plant that had a mix of round and wrinkled pollen? (Indicate which of the following MUST be
true.)
Comments: This problem is more complicated that it might appear at first. For example, if
the parent with some of its own anthers and some introduced pollen has a phenotype that
results from a homozygous dominant genotype, the F1 would all appear to have the
dominant phenotype even if some recessive pollen grains were introduced. However, if the
parent had a recessive phenotype and mixed pollen, the results would differ. Remember, the
9:3:3:1 ratio is when two different genes are involved.
A. The F1 peas produced would have mixed
phenotypes.
B. The F1 peas produced would have a
single phenotype.
C. The F2 peas would have phenotypes in a
9:3:3:1 ratio.
D. The F2 peas would all have the phenotype
of the parental plant with the anthers not
properly removed.
E. The F1 peas would have phenotypes in a
1:1 ratio.

Answer 1

B