On: The fungus that devastates the Cavendish banana ha...

[colordrops]

How exactly would an apple "randomly" acquire a jellyfish gene?

[adrianN → colordrops]

The same way that fish eventually acquired the "lungs" genes.

[crag → adrianN]

//The same way that fish eventually acquired the "lungs" genes.

Which took a million years. But now watch out - we can do it in 4 hours. That's the difference.

[colordrops → adrianN]

That's not how it works. There are not one universal set of genes for "lungs". When two species develop a similar characteristic, the genes are still completely different.