Question

Which of the following animals was selected by Morgan for studying linkage?

• A. Apis indica
• B. Agrobacterium tumefaciens
• C. Drosophila melanogaster
• D. E.coli

Answer 1

The correct option is C Drosophila melanogaster

Thomas Hunt Morgan used Drosophila melanogaster (fruit flies) to show how sexual reproduction gave rise to variations.

Morgan observed that while crossing a set of characteristics, two genes did not segregate as per Mendel’s law. If two genes were present on the same chromosome, the probability of getting a parental combination was much higher in the next generation as compared to the non-parental combination. This physical association of genes was termed as linkage.

So, the correct answer is 'Drosophila melanogaster'.