In cucumbers, dull fruit (d) is dominant to glossy fruit (d), and orange fruit (r) is dominant to cream-colored fruit (r). the gene that codes for dull or glossy assorts independently from the gene that codes for orange versus cream-colored. a plant that has dull and orange fruits is crossed to a plant that has dull and cream-colored fruits. the cross produces eight total progeny, with three plants that have dull and orange fruits, three plants with dull and cream-colored fruits, one plant with glossy and orange fruits, and one plant with glossy and cream-colored fruits. give the genotypes of the parents and all the possible genotypes of the offspring of the cross.

The genotypes of the parents are: DdRR and Ddrr

The possible genotypes of the offspring are: DDRr , DdRr , DdRr , ddRr .

Explanation:

A plant that has dull and orange fruits can have next genotypes: DDRR, DDRr and DdRR. A plant that has dull and cream-colored fruits can have DDrr or Ddrr genotype. If we cross those two plants, and in offspring appears glossy fruit which is homozygous recessive dd (two recessive alleles) this mens that both "parent" plants contain one recessive allele (Dd).

So, the genotypes of the parents are DdRR and Ddrr and the possible genotypes of the offspring are DDRr , DdRr , DdRr , ddRr .

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