## Step 8

One week later Secunda returns to your office. You have not sent her the results yet, but she is leaning towards choosing for Tertio already. Because of that she asks you to perform two to three extra calculations.

Secunda lives close to a forest where you can find the local variation of lettuce, a head high plant..

She and Tertio have both been tested for the presence of alleles for sharp (Q) and blunt herbivore (q) teeth and for the presence of the allele that enables a Zokky to digest the lettuce leaves (R). Both turn out to be heterozygous for both characteristics. Secunda would like to know what ratio to expect in their possible offspring : How many children would be able to eat the leaves, how many should be able to digest the leaves and how many should be able to do both (and thus be able to use the forest as a food source)?

Use the form in source 2 to perform a dihybrid cross. Use a clutch size of 80 eggs for your calculations.

Secunda lives close to a forest where you can find the local variation of lettuce, a head high plant..

She and Tertio have both been tested for the presence of alleles for sharp (Q) and blunt herbivore (q) teeth and for the presence of the allele that enables a Zokky to digest the lettuce leaves (R). Both turn out to be heterozygous for both characteristics. Secunda would like to know what ratio to expect in their possible offspring : How many children would be able to eat the leaves, how many should be able to digest the leaves and how many should be able to do both (and thus be able to use the forest as a food source)?

Use the form in source 2 to perform a dihybrid cross. Use a clutch size of 80 eggs for your calculations.

*After a week, you send the results of your calculations to Secunda.*