The organism was found to have two lungs, but the left lung was much smaller than the right lung. Kelly added that the herpetology instructor had said that in most snakes, the same condition exists. If the size difference between the lungs in this organism is not a shared ancestral characteristic with its occurrence in snakes, then its existence in this organism is explained as which of the following?1. a result of convergent evolution 2. an example of homologous structures 3. a similar adaptation to a shared lifestyle or body plan 4. a result of having identical Hox genes 5. a homoplasy