First of all, Richard Dawkins isn't an 'expert' on anything - he's just a popular media figure who's achieved popular fame for attacking religion, and who happens to have a few biology degrees. Taking Dawkins to represent the current state of knowledge in evolutionary biology is akin to comparing your high-school math teacher to someone like Terence Tao - and trust me, Terence Tao had mastered more math by the age of 10 than your average math teacher will in an entire life-time.
But putting that aside, I have some very bad news for you creationists - creationism will very soon (within the next 15 years at maximum is my guess) be less tenable than the flat-earth conspiracy. Let me show you why:
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I don't know in what year that interview happened in but if you take a look at that graph, what it shows you is that the cost to sequence the entire genome of an individual human being went from around 100 million dollars to less than 1000 dollars today. Sequencing other animals has also dropped unimaginably in price.
Not only that but CRISPR-Cas9 -for all you people who keep up with science news, you should recognize this as the new genetic engineering technology that has, for example, made conducting genetic engineering projects that used to take years now possible within a couple of days. CRISPR was invented in 2012: in the year your video was posted, in 2011, the average genetic engineering project that took around 2 years to complete can now be done in about 4 days thanks to CRISPR.
These two factors together have already within the past 3 years caused the field of genetics to literally explode.
Contrary to what you creationists might have thought, we actually knew very little about functional genomics (the field that studies these questions: what genes encodes for this or that trait?) - unfortunately for you guys, those two factors are going to change that fact very, very soon. In fact, it already has.
We have probably discovered more about functional human genetics in the past few years than we did in the 100 years from the year 1900-2000. Sadly for you though, not only is it the case that everything we have discovered about genetics, including human genetics, supports evolution but strong creationism - God created Adam and Eve with magic who then magically went on to produce the various human populations - has already been falsified.
Let me now show you why it has been falsified. Consider the native people of Tibet - for those of you who don't know, these are the native peoples of the Chinese province of Tibet. Tibetans are a very interesting group of human beings because for thousands of years they have lived in an environment quite different from that of most other human beings: you see, Tibetans essentially live very high up in the mountains - at very high altitudes, where there is significantly less oxygen in the air than down on earth where most other human beings live.
It turns out that their very unique environment caused probably the fastest rate of human evolution that we know of so far for modern humans because already, they have evolved significant biological adaptations to their environment (in about 3000 years it seems). Here is the paper:
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Now let me finally give you some genes: Tibetans have a mutated allele for the so called EPAS-1 gene which encodes for HIF-2α - this a special protein that is involved in how your body cells respond to decreases in oxygen availability (hypoxia). So what does this gene do? Well I don't want to fry your brain with too much biology so Ill try to make it entertaining:
You see there are other people who have lived and live in high-altitudes - a few such South American peoples (e.g.Aymara and Quechua people) have also been studied - and what we find with all those other groups is that their bodies, on average, tends to produce much more red-blood cells than is found in say people like you or me - they need those extra red-blood cells to essentially make the most of the little oxygen they can get from the air at that altitude. The problem is that if your body produces too much red-blood cells, it makes your blood viscous - which will certainly predispose you to all sorts of circulatory system problems and diseases. But note that no "new information" was added to these peoples DNA - they simply make a lot more red blood cells. The Tibetan mutant gene, it appears, has made it possible to more efficiently absorb and transport oxygen in your body without the need for all those extra red blood cells that tend to give you heart problems.
Now this is a very common pattern in evolution: in the short-run, evolution - being a blind process - will equip organisms with a double-edged sword adaptation, usually via selection alone, i.e. there will be some benefits to help you deal with your environment but also some costs. Another example of this is the well known sick-cell trait peculiar to Africans - I won't go in to detail on this because any high-school biology textbook will talk about this.
But in the long-run, evolution will tend to give organisms trait (new traits!) that confer smaller and smaller costs for the benefit they give. These new traits, are of course, mutations - which is why they take a while to show up. And yes, these new traits do add "information" to the genome.
So here is our story: sub-groups of the human organism (specifically the Aymara, Quechua and the Tibetan people) have been adapting to low oxygen environments up in the mountains for some time now. In two of those sub-groups, the Aymara and Quechua people, new-comers in the high-altitude environment, evolution has only acted on through selection alone, i.e. made their blood more dense with red-blood cells. But in one special group - the Tibetan people - who have lived up in the mountains for far longer than the other groups, evolution has blessed with something far more efficient: a mutation in EPAS-1 gene which encodes for proteins involved in oxygen diffusion at the cellular level.
