A female guinea pig is heterozygous for both fur color and coat texture is crossed with a male that has light fur color and is heterozygous for coat texture. What possible offspring can they produce? Dark fur color is dominant (D) and light fur (d) is recessive. Rough coat texture (R) is dominant, while smooth coat (r) is recessive.​

Dear student,                     
​Please find below the solution to the asked query  

​Parents: DdRr                           x                   ddRr
​            (dark fur, rough coat)               (light fur, rough coat)

Possible offsprings:
  DR Dr dR dr

DdRR DdRr ddRR ddRr

DdRr Ddrr ddRr ddrr

DdRR DdRr ddRR ddRr

DdRr Ddrr ddRr

Phenotypic ratio is 6 (dark,rough with genotype DdRr and DdRR): 6 (light, rough with genotype ddRr and ddRR): 2 (dark, smooth with genotype Ddrr): 2 (light, smooth with genotype ddrr).
Hope this information will clear your doubts about the topic.   
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