Problems with Evolution

The scientific method depends on hypotheses that are falsifiable, testable, and repeatable. The problem with the theory of evolution is that it is very difficult to breed a new species in the span of only a couple hundred years. Intelligent Design (I.D.) proponents say it is impossible even if you had a billion years. How they know this I don’t know. I.D. proponents say new species were created by a Designer. This does even less to explain where different species came from.

Alright, Bobmo and Perry and anyone else, go at it.

7 Replies to “Problems with Evolution”

  1. You can’t create a new species by interbreeding. When you interbreed, you reduce the number of species, not increase them.

    It’s not very difficult to create a new species from scratch. It’s impossible. You have to create new genetic material. Where are you going to get that?

  2. I don’t know. I mean, I’ve heard of the random mutation idea but I don’t know if it would work.

    When I said breeding I meant watching a species for many, many generations to see if they develop new genetic traits. I did not mean interbreeding or cross-breeding.

  3. You must not be aware of the recent findings of a bacterial population that demonstrated evolution in action.

    http://www.newscientist.com/channel/life/evolution/dn14094-bacteria-make-major-evolutionary-shift-in-the-lab.html

    Essentially this is what the researchers did.

    20 years ago they began an experiment with E. coli bacteria.

    They just let the strains of bacteria grow and multiply under a variety of environmental conditions. In one of these conditions they underfed the bacteria but provided another chemical that could potentially be used for food if the bacteria happened to have the proper genes for doing so.

    Well, 31,500 generations and 3 mutations later, the bacteria did evolve to be able to start using that new food.

    Yes, they spontaneously evolved a new trait that improved their survival rates. Pretty much proving that evolution happens in bacteria & providing a compelling argument that it happens (and happened) in all other species.

    You are correct Dedwarmo. Random mutations do create new genetic material.

    ID proponents offer no evidence of their claims that would be testable or falsifiable. It’s not science and it doesn’t provide any useful information about biology.

  4. The NewScientist article you mentioned didn’t say whether the number of chromosomes increased or decreased or the number of genes changed. There also have been bacteria that have become resistant to antibiotics. I don’t know if that was a result of genetic mutation.

    Another question that just popped into my head: How difficult would it be for a prokaryote to become a eukaryote?

  5. The thing that made the study significant is that there was not a single mutation that was responsible for the new trait picked up by the bacteria. Resistance to antibiotics is a trait developed from single mutations. This new genetic trait of being able to use a food otherwise never used by bacteria was the result of 3 independent mutations. None by themselves were useful to the bacteria, but together they created the new trait.

    Not sure how difficult it would be. But when eukaryotes split off from prokaryotes 100s of millions of years ago, there must have been some environmental factors that made the transition beneficial.

Comments are closed.