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.
which type of inheritance is this an example of?

incomplete dominance

sex - linked inheritance

codominance

recessive inheritance

Explanation:

To determine the inheritance type, we analyze each option:

• Incomplete dominance: Phenotype is a blend (e.g., red + white = pink), but here RY shows both red and yellow, not a blend.
• Sex - linked inheritance: Traits linked to sex chromosomes (X or Y), not relevant here as the example doesn't involve sex chromosomes.
• Codominance: Both alleles are expressed simultaneously in the heterozygote. The RY grasshopper shows both red and yellow stripes, meaning both R and Y alleles are expressed, which fits codominance.
• Recessive inheritance: Requires a recessive allele to be homozygous to be expressed, but here RY (heterozygote) shows both traits, not recessive.

Answer:

C. codominance