Question

a certain species of grasshopper can have red stripes, yellow stripes, or red and yellow stripes. an rr grasshopper has red stripes, a yy grasshopper has yellow stripes, and an ry grasshopper has red and yellow stripes. a grasshopper with red stripes mates with a grasshopper with yellow stripes. what ratio would be expected in the phenotypes of their offspring? ○ all with red stripes ○ 2 with red stripes: 2 with yellow stripes ○ all with yellow and red stripes ○ 1 with red stripes: 2 with red and yellow stripes: 1 with yellow stripes

Explanation:

Step1: Determine Genotypes

The red - striped grasshopper has genotype \(RR\) (so it can only produce gametes with the \(R\) allele), and the yellow - striped grasshopper has genotype \(YY\) (so it can only produce gametes with the \(Y\) allele).

Step2: Analyze Offspring Genotypes

When these two grasshoppers mate, all of their offspring will have the genotype \(RY\) (because the \(R\) from the red - striped parent and \(Y\) from the yellow - striped parent combine).

Step3: Determine Phenotypes

From the problem, we know that a grasshopper with genotype \(RY\) has red and yellow stripes. So all of the offspring will have red and yellow stripes.

Answer:

all with yellow and red stripes