I recently stumbled across a website for a Christian organisation calling themselves "The Institute for Creation Research" (ICR) with their main goal apparently being to harmonise Science with the Bible. One would think then any serious attempt at such would be done by a team of fully qualified science majors specialising in a selection of fields such as variants of Biology, Geology and the sciences involved in genetics amongst others.
Logically speaking, one has to be able to understand the science before they attempt to harmonise with it, or indeed as the organisation seem to often do, refute it and so the aforementioned team would be necessary for serious conclusion. However; as is often the case with Christian websites refuting science; no such team exists at the "Institute of Creation Research" with their misunderstanding of DNA sequencing and even the roles of different chromosomes easily demonstrated in their front page article "Are Humans as Close to Chickens as They Are to Chimps" (the miscaps are theirs not mine).
The Article refers to the results of the comparison of Human Y Chromosomes with the Y Chromosomes in Chimps which were published in the biological journal "Nature". The original article in Nature speaks about how little knowledge of the Y Chromosomes evolution across species as full sequencing has only ever, until recently, been performed on Humans. The article then goes on to speak about how divergent the Y Chromosomes in Humans and Chimps are.
Showing their total and complete ignorance to genetics, the "Institute of Creation Research" then picked up the article in Nature and decided to run it's results as proof humans and chimps are unrelated and share no common ancestor. In fact the results actually prove nothing like that. In outright incomprehension they continued on to attempt to use this data to disprove the fact that Humans and Chimps hold 98% of their genome in common.
"Most of their findings do not fit well with the often-repeated erroneous statement that humans and chimps are 98 percent similar, nor with the more general hypothesis that they share a common ancestor. One sequence class within the chimpanzee Y chromosome had less than 10 percent similarity with the same class in the human Y chromosome, and vice versa. Another large class shared only half the similarities of the other species, and vice versa. And one whole class on the human Y chromosome “has no counterpart in the chimpanzee MSY [male-specific Y chromosome].”"
They couldn't have gotten it more wrong. Beyond the use of their continual phrase "vice versa" being redundant (It's like saying X and Y are different and so is Y and X different), they've also demonstrated thorough naivety towards how genetics works, how the 98% genome comparison between humans and chimps was achieved and the role the Y Chromosome plays.
So on the off chance someone from the ICR stumbles across this blog, and to better educate people before they read such crude pseudo-scientific articles I'll explain the situation a little better. The Y chromosome exists ONLY in males, meaning that females exist entirely without it, but funnily enough are still part of the same species. Meaning the Y chromosome is more about gender difference then it is about species difference. While they haven't yet been compared, I'm quite certain you'll see equivalent differences in the Y chromosomes of birds. It doesn't mean they don't hold a common ancestor, nor that they aren't all birds.
Furthermore, if you compare the human Y chromosome with that of another human, you'll find a large amount of differences just as you will with any other part of DNA sequencing. This is because of genetic variation, and so it isn't overly surprising to find differences between humans and chimps. What the scientists involved WHERE surprised at was there were more differences than they predicted. But as previously stated little is known about the evolution of the Y chromosome, it's an area for which this comparison is only the beginning of research.
But simply misjudging the number of differences is no more proof that humans and chimps are unrelated, than the countless misjudgements and mistakes made during the evolution of IVF proves it won't produce babies. Clearly IVF does produce babies, and clearly misjudgements in differences doesn't disprove theories nor do they disprove the FACT that humans and chimps share 98% of their genes in common.
To illustrate how completely out of context the ICR have taken comments made in the original Nature article check out these 2 sequential paragraphs taken from the "Institute of Creation Research" article
"The Nature paper expressed the mismatch between this data and standard evolutionary interpretations in a more muted tone: “Indeed, at 6 million years of separation, the difference in MSY gene content in chimpanzee and human is more comparable to the difference in autosomal gene content in chicken and human, at 310 million years of separation.”1 Autosomes are the chromosomes other than the X and Y.
So, the human Y chromosome looks just as different from a chimp’s as the other human chromosomes do from a chicken’s. And to explain where all these differences between humans and chimps came from, believers in big-picture evolution are forced to invent stories of rapid wholesale rearrangements, and rapid generation of both new gene-containing and regulatory DNA."
The Nature article quote clearly is referring more towards the timeline difference, rather than actual similarities between humans and chickens. It's a quote that is clearly directed toward the surprise in difference between Y chromosomes and how long those changes were previously thought to have taken. But undoubtedly it's a quote that will go on to haunt science for years to come as creationists misunderstand the quote continually.
Ultimately anyone who can not conclusively see the similarities both in physical looks and behaviour modelling between humans and chimps is delusional. Evolution is a theory backed by insurmountable evidence, and while there may be surprises found during it's continued research, those surprises won't be such as to disprove the theory of evolution, which itself is still evolving as new research is preformed. If anything, all this new data about differences in human and chimp Y chromosomes proves is some timeline theories are off. To conclude anything more than that however is laughable.
Links;
ICR Article
Original Nature Article