Answer:
Embryologists introduced the gene for wing spots to the jellyfish gene for fluorescence and injected it into non-spotted flies. This turned on the gene for spots in the non-spotted flies
Step-by-step explanation:
Embryology is the branch of biology that deals with the study of embryo development. It also studies the response of various internal or external factors on embryonic development (for example, gene manipulation). Similarly, the above-mentioned experiment was performed to see the application of embryology by altering genes in flies. Hence, a successful modification was observed.