A horticulturalist wants to produce geraniums with specific characteristics. she knows that the trait of red flowers is governed by the allele r (rr and rr) and the trait of white flowers is governed by the allele r (rr). a cross of two geraniums yields offspring that are 100% ​​rr​​. which choice best represents the alleles of the parents? responses ​rr​ and ​rr​ ​, uppercase r lowercase r, ​ and ​ lowercase r r ​ ​rr​ and rr ​, uppercase r r, ​, and , lowercase r r ​rr​ and ​rr​ ​, uppercase r r, ​, and , ​, uppercase r lowercase r, ​ ​rr​ and ​rr​ ​, uppercase r lowercase r, ​ and ​ uppercase r lowercase r ​