In the 1970s, when scientists compared the sequences of DNA in genes with the sequences of RNA encoded by those genes, they made a puzzling discovery: the DNA of most genes in animals, plants, and other eukaryotes contains too much information. The extra segments of largely useless information were named introns, and they must be cut out of RNA before the protein is made. Exons are the portions of the gene that remain in the RNA after the introns have been removed.
Salvador seems to have successfully hijacked the early embryonic mutations thread and turned it into a discussion of junk DNA. So I thought I’d share my thoughts on the subject of junk DNA. Why care?
Various strains of creationism hold that the earth and life started out perfect, then came the fall, and it all went downhill from there. Both young earth and old earth forms can easily accommodate the presence of junk in DNA. So the presence of junk DNA does not mitigate against the creationist position. But what of it’s absence?
In a recent thread here at TSZ the question was raised as to whether naturalism is comfortable with highly typical events. My answer to that question was quite so. Exhibit: the appendix.
Although it is widely viewed as a vestigial organ with little known function, recent research suggests that the appendix may serve an important purpose. In particular, it may serve as a reservoir for beneficial gut bacteria. Several other mammal species also have an appendix, and studying how it evolved and functions in these species may shed light on this mysterious organ in humans.
But wait. There’s more…
It is a little known fact that scientists who argue that the paleontological record of life is hundreds of millions of years old, when confronted with astrophysical facts, must eventually rely heavily on the hypothesis of finely tuned, large scale global warming. The problem is known as the Faith Young Sun Paradox. A few claim they have solved the paradox, but many remain skeptical of the solutions. But one fact remains, it is an acknowledged scientific paradox. And beyond this paradox, the question of Solar System evolution on the whole has some theological implications.
Astrophysicists concluded that when the sun was young, it was not as bright as it is now. As the sun ages it creates more and more heat, eventually incinerating the Earth before the sun eventually burns out. This is due to the change in products and reactants in the nuclear fusion process that powers the sun. This nuclear evolution of the sun will drive the evolution of the solar system, unless Jesus returns…
There have been a number of interesting comments lately here at TSZ that referred to viruses.
Are viruses pre-biotic entities, and did they contribute to the origin of life?
Are viruses alive?
Do viruses evolve?
Are viruses an example of what evolution is capable of?
Did viruses contribute to the evolution of life?
Should be fodder for some discussion.
Is anyone here skeptical of the Extended Evolutionary Synthesis (EES) in biology/biological sciences? If so, why? If not, why not?
Background: A couple of days ago I interviewed one of the participants in the Royal Society’s recent ‘New Trends’ meeting (audios now available), who is obviously pro-EES ,as part of a nearly completed research project from the past couple of years.
My interviewee gave the (ahem) ‘brilliant’ answer of a stone when asked to speak about ‘things that don’t evolve’ (one of those interviewer places where it’s really hard to mask a delighted smile with neutrality!) after claiming not to understand the question: “What are the limits of evolution as a scientific theory?” (we had already been discussing its ‘possibilities’ and I explained earlier that I would ask both about the possibilities and the limits of evolutionary theories). Undergrad students around the world chuckle when they hear the Rock answer (as if geological evolution doesn’t exist in the minds of biologists)!
It’s just a ‘play of scales,’ after all, that slips us into the ‘evolution of everything,’ don’t forget 😉
b. July 15, 1928
d. December 30, 2012
“Thus, we regard as rather regrettable the conventional concatenation of Darwin’s name with evolution, because there are other modalities that must be entertained and which we regard as mandatory during the course of evolutionary time.”
“I have concerns about scientists thinking that they’re God when it comes to biology.”
“A future biology cannot be built within the conceptual superstructures of the past. The old superstructure has to be replaced by a new one before the holistic problems of biology can emerge as biology’s new mainstream.”
“I do not like people saying that atheism is based on science, because it’s not. It’s an alien invasion of science.”
In a recent post here at TSZ, participant Alan Fox made some comments and asked some questions which might make for interesting discussion, but first I need to challenge some of his assumptions.
First, his claim that I find evolutionary theory unbelievable.
Second, his claim that I find a naturalistic explanation for the origin of life theory unbelievable.
Third, his his claim that I mock attempts at scientific hypotheses.
Fourth, I thought being skeptical is a good thing.
The National Institute of Mental Health (NIMH) of the National Institutes of Health (NIH) sponsored the work of John Calhoun on social behaviors. Here were the results of one of his experiments:
On July 9th, 1968, eight white mice were placed into a strange box at the National Institute of Health in Bethesda, Maryland. Maybe “box” isn’t the right word for it; the space was more like a room, known as Universe 25, about the size of a small storage unit. The mice themselves were bright and healthy, hand-picked from the institute’s breeding stock. They were given the run of the place, which had everything they might need: food, water, climate control, hundreds of nesting boxes to choose from, and a lush floor of shredded paper and ground corn cob.
This is a far cry from a wild mouse’s life—no cats, no traps, no long winters. It’s even better than your average lab mouse’s, which is constantly interrupted by white-coated humans with scalpels or syringes. The residents of Universe 25 were mostly left alone, save for one man who would peer at them from above, and his team of similarly interested assistants. They must have thought they were the luckiest mice in the world. They couldn’t have known the truth: that within a few years, they and their descendants would all be dead.
The challenge, for all and sundry but especially for “Darwin doubters”, should you wish to take it, is to submit a one-paragraph summary of the theory of evolution. The idea is to see if you understand it well enough to fairly summarize the theory so that you pass as a proponent of evolution. We also need some examples from proponents to test the null hypothesis!
To ensure anonymity, please submit your paragraph by private message to me or another admin and we will add it in edit. (Or email it to me at email@example.com if you prefer.) Continue reading