First determine the genotypes of the parents, both of which have red and yellow stripes. In a case of incomplete dominance with these grasshoppers, what genotype would this make the parents?





Now that you have the genotypes of the parents, perform a punnett square to determine what the F1 offspring would be (remember to place the gametes of one parent across the top and the gametes of the other parent down the left side. It does not matter which parent's gametes are placed across the top and which are placed down the side.):




Your punnett square should look similar to the one below. If it does not, review the material on gamete formation and how to set up the punnett square and try again.

R r
R RR Rr
r Rr rr


Count up how many of the four possible offspring in the square have each genotype and each phenotype.

Now return to the question page and select the correct answers.





Once again, determine the genotypes of the parents first. A grasshopper with stripes of both colors would have what genotype?



...and the grasshopper with yellow stripes has what genotype?



Now perform a punnett square using the gametes for two of the F1 individuals:





Your punnett square should look similar to the one below. If it does not, review the material on gamete formation and how to set up the punnett square and try again.

R r
r Rr rr
r Rr rr




Count up how many of the four possible offspring in the square have the different genotypes and phenotypes.

Now return to the question page and select the correct answers.