Which fish growth hormone gene is transferred through genetic modification? A Loitta B Nilotica C Catfish D Salmon

The fish growth hormone gene that is commonly transferred through genetic modification is the one associated with Salmon. Specifically, the juvenile growth hormone (GH) from the Pacific salmon species is often inserted into other fish species, such as Atlantic salmon, to enhance growth rates.

Explanation:

In genetically modified organisms (GMOs), the introduction of specific genes can lead to increased production efficiency. For salmon, the genetic modification allows the fish to grow much larger and faster than they would through natural breeding methods. This is primarily aimed at improving aquaculture productivity and sustaining fish farming practices. The most well-known genetically modified salmon is the AquaBounty Technologies' AquAdvantage salmon, which incorporates a growth hormone gene from Chinook salmon along with a promoter from the ocean pout.

In summary, the correct answer is:

D. Salmon