Chapter 1. Working a Dihybrid Cross

1.1 Problem Statement

In cucumbers, dull fruit (D) is dominant to glossy fruit (d), and orange fruit (R) is dominant to cream (r) fruit. The genes coding for dull and glossy assort independently from the genes coding for orange and cream. A plant that has dull and orange fruits is crossed to a plant that has dull and cream fruits. The cross produces 38 plants with dull and orange fruits, 38 plants with dull and cream fruits, 18 plants with glossy and orange fruits, and 18 plants with glossy and cream fruits. Give the genotypes of the parents and offspring of the cross.

Note: Your answers need to be placed into the chart below in the order that the parents and progeny are given in the question.

Question 1.1

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{qqMC1 == 0} 1.2 Let's potty train.
{qqMC1 == 1} 1.3 Ok, we'll potty train later.

1.2 Potty Training

Potty training!

1.3 Not Potty training

This is not potty training.