Chick with genetic defect

[u/Significant_Snow_718]

[u/SousVideDiaper]

not really

You just gave context for what they said, tho

[u/Caspica → u/SousVideDiaper]

I think it's more that they're trying to point out the difference between evolution and genetic mutations. Evolution is what occurs on a macroscopic level over a long period of time to organisms. Genetic mutations are what happens on the microscopic level that could play part in the evolution of an organism. That doesn't mean that a genetic mutation implies that the animal has evolved. 

[u/discordagitatedpeach → u/Caspica]

I'm an evolutionary biologist and this is incorrect. By definition, evolution occurs any time the frequency of alleles changes in a population. Microevolution is still evolution. That means that a single novel mutation is still evolution, even if it doesn't spread to fixation in the population.

[u/CantHandleTheThrow → u/discordagitatedpeach]

I like you, smart person.

Evolution doesn’t always mean advantages. It could just mean fewer disadvantages.