You’re investigating inheritance of two traits – size (the g gene) and design (the f gene) – of the leaves of the coleus plant. In this story, giant size and striped design are the dominant phenotypes. You’ve completed a mating experiment where you crossed a dihybrid with an individual who is homozygous recessive for both traits; offspring data are listed here.
phenotype
# of offspring
giant, striped
32
giant, solid
112
small, striped
115
small, solid
29
a) List all of possible the genotypes of the offspring from this cross.
b) Are these genes linked? How did you know?
c) Sweet. So, if you can determine it, which phenotypes are parental and which are recombinant?