Question

fruit flies in the wild have brown bodies, red eyes, and straight wings. many variations have been produced and used to study genetics. consider the data below.
data 1: traits for curly wings and black body tend to be inherited together when dihybrids for these traits are crossed.
data 2: the traits for white eyes and curly wings recombine in the expected 9:3:3:1 when dihybrids for these traits are crossed.
which explanations best explain the data? check all that apply.
the genes for eye color and body color are located on the same chromosome.
the genes for wing shape and body color are located on the same chromosome.
the genes for eye color and wing shape are on different chromosomes.
done

Explanation:

• For the first option: There is no data provided about eye - color and body - color genes, so we cannot confirm this.
• For the second option: Data 1 shows that curly wings (wing - shape trait) and black body (body - color trait) tend to be inherited together. According to the concept of gene linkage (genes on the same chromosome tend to be inherited together), this implies that the genes for wing shape and body color are located on the same chromosome.
• For the third option: Data 2 shows that white eyes (eye - color trait) and curly wings (wing - shape trait) recombine in the expected \(9:3:3:1\) ratio (Mendelian dihybrid ratio). When genes recombine in the Mendelian dihybrid ratio, it indicates that they assort independently, which means they are on different chromosomes.

Answer:

B. The genes for wing shape and body color are located on the same chromosome.
C. The genes for eye color and wing shape are on different chromosomes.