Consider a fish, rabbit, gorilla, and human. Which two organisms would most likely have the closest horology with respect to their DNA

Gorilla and human

Explanation:

In 2005 the human genome was sequenced and scientists found that the human genome is 99% similar to chimpanzees (a type of gorilla). So according to the above statement gorilla and humans has the closest horology with respect to DNA.

"griffith's experiment discovering the "transforming principle" in pneumococcus bacteria. griffith's experiment, reported in 1928 by frederick griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation." - griffith's experiment.