Questions for Creationists.
A bit of turning the tables in the direction they should be. Feel free to add your own well thought out queries to the irrational. Evolution should NOT ever be on the defensive, when a creationist asks a ridiculously trite strawman of a question, retort with one of my personal favorites:
Here are a few questions I like to ask, and they are only the tip of the iceberg (I can formulate hundreds more, but we must start somewhere):
What do you have to say and how do you scientifically explain endogenous retrogene insertions without evolution by common descent?
Endogenous retroviral insertions are arguably the best example of molecular sequence evidence for universal common descent. Endogenous retrogene insertions are molecular remnants of a past parasitic viral infection. Occasionally, copies of a retrovirus genome are found in its host's genome, and these retroviral gene copies are called endogenous retroviral sequences. Retroviruses, like HIV, make a DNA copy of their own viral genome and insert it into their host's genome. If this happens to a germ line cell (i.e. the sperm or egg cells) the retroviral DNA will be inherited by descendants of the host. This process is rare and fairly random, so finding retrogenes in identical chromosomal positions of two different species indicates common ancestry.
There are at least seven different known instances of common retrogene insertions between chimps and humans, indicating common ancestry. I'll say it again, the same insertion occurs at the same DNA marker in two totally different species at a rate that is far far greater than chance. There are numerous know examples across other species as well.
What do you have to say about the biochemical similarity of all life on earth, and how do you scientifically explain this without evolution?
The only organic polymers used in biological processes are polynucleotides, polysaccharides and polypeptides - chemists have mades hundreds, if not thousands of additional organic polymers, but only these three contribute to biological life as we know it.
In addition, all the proteins, DNA and RNA in every organism known to man use the same chirality (twist), so for example out 16 different possible isomers of RNA, all organisms use one and only one, and they all use the same one.
There are something like 300 (forget the exact number) naturally occuring amino acids in nature. Only 22 acids are used in life as we know it, and all organisms use the same 22 acids to build proteins and carry out biological processes.
All of this points to a, as in ONE, common ancestor to ALL life on earth. The fact that no known organisms differ from this fundamental scheme when countless other schemes could work equally well should smack anyone who examines it in the face. If evolution were NOT true the odds that ALL organisms would use the same biochemical schemes is utterly astronomical.
Oh, and another example, all organisms use the same 4 nucleotides to build DNA - out of something like 100 naturally occuring nucleotides.
Oh, and all life on earth derives metabolic processes from ATP, plenty of other natural compounds would have worked equally well.
The biochemical evidence for evolution is some of the strongest evidence for evolution we have.
What do you have to say about the hominid fossil record? Do you still think there are no fossilized ?missing links? now?
We should expect related species to look similar.
What do you have to say about these observed speciation events?
How do creationists explain coccygeal retroposition (true human tails) and other atavisms and vestigual structures?
An atavism is the reemergence of a lost phenotypical trait from a past ancestor and not specific to the organisms parents or very recent ancestors. For example, perhaps you would care to explain well documented coccygeal projections (true tails) that are occasionally found on human newborns? Do you have a better explaination than the tails resulting from the incomplete regression of the most distal end of the normal embryonic tail found in the developing human fetus?
You can see about 100 medically recorded instances of this phenomena here:
And just so there is no misunderstanding, these are true tails, with vertebrae extending from the human tail bone as shown in this x-ray:
What about other vestigual structures like molecular vesitges in the form of human viatamin C definciency? Why does the gene for manufacturing viatamin C exist as a psuedogene in humans and also as a broken gene in chimps, orangutans and other primates - as predicted by evolutionary theory? Why can more distant relatives like dogs make their own viatamin C? This is only one of the molecular atavisms found in humans. What is your scientific explanation for this, if not evolution by common descent?
And another from a fried of mine, warriorking:
So I'm in medical school learning about the human body and all the time, I'm wondering how creationism (or ID supporters, whoever's willing to answer me) covers some of the similarities between humans and other animals that aren't like us and how they explain how poorly our bodies are designed. I wanted a thread where I could ask my questions, and anyone else who has intellectual questions for creationists, I want to hear other oddities that don't seem to be explained without common ancestry.
Let's suppose that the appendix is an intentional lymphoid tissue (it's not, and it doesn't really serve as such, but let's give Ken Hovind that). How do you explain the hair-on-end reflex to cold or fright? Our hair doesn't insulate us and it doesn't seem to scare away predators or other men in an ensuing battle. Why are our hairs innervated to do that if we have no common ancestor with other mammals? Think about it, dog showing fangs and hair-on-end...you're not going to try to pet it. My hair stands on end, I'm still cold and you'd still probably try to kick my ass. Why do our hair follicles need muscle innervation if we're created intelligently and uniquely from all other mammals?
I am against religion because it teaches us to be satisfied with not understanding the world. - Richard Dawkins
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