Dihybrid Cross Quiz

What is a dihybrid cross?

• A cross involving three traits

• A cross involving four traits

• A cross involving two traits

• A cross involving one trait

Which of the following is a possible genotype for a plant with red flowers and tall stems?

• rrTt

• RRTt

• RrTt

• rrtt

What is the purpose of using a Punnett square in a dihybrid cross?

• To calculate the age of plants

• To measure the height of plants

• To predict the genotypes of offspring

• To determine the number of offspring

In a dihybrid cross, what is the genotype of the F1 generation when crossing RRTT with rrtt?

• rrtt

• RrTT

• RRTT

• RrTt

What is the phenotypic ratio observed in the F2 generation of a dihybrid cross?

• 3:1

• 9:3:3:1

• 4:4:4:4

• 1:2:1