Kip studies flower color in petunias, where the allele for red flowers, R, is dominant to the allele for white flowers, r. If Kip makes the cross RR x rr, the gametes that are produced
will all carry the r allele.
will all carry the R allele.
by one parent will carry R and by the other parent will carry r.
by one parent will carry Rr and by the other parent will carry rR.