This is an old claim from creationists who really don’t understand evolution… or apparently reproduction. I don’t consider it a ‘weakness’ of evolution, but it is an attack against it.
If humans evolved from monkeys, how come monkeys still exist?
Tag weaknesses of evolution
The last section of the webpage “weaknesses of evolution” is some helpful tips from creationists about how to prevent misunderstandings.
Creationists are constantly harping on the difference between “micro-evolution” and “macro-evolution”. ‘Micro’ being the small changes within a population that is readily observable in nature and the lab. ‘Macro’ being the larger changes between higher taxonomic levels. Personally, I greatly dislike this artificial distinction. There is evolution.
What I thought I would do is take some of these ‘weaknesses of evolution’ and examine them. Hopefully providing a resource to show how these weaknesses aren’t really problems or they have been dealt with by current science.