Now where was I...
Since neutral mutations are unlikely to become fixed,
Their probability of fixation equals their starting frequency.
most of the differences between chimps and humans are beneficial
How do you know this? HOW MANY?
Isn't THAT the question?
It is, IF and ONLY IF you actually understand the creationist 'Haldane's dilemma' argument - and are YOU not the one presenting that argument on this forum? Yes, yes you are.
As I explained, Haldane's model is about FIXED, BENEFICIAL mutations, not ALL mutations.
The creationist argument regarding Haldane's model is that the number of FIXED, BENEFICIAL (NOT neutral) mutations 'allowed' is asserted to be "too few" to account for human evolution from an ape-like ancestor.
THAT is your argument, so why you are yammering on about neutral mutations can only be seen as either the result of you not knowing what your own argument is about, or an attempt to muddy the water so you will not have to admit that your argument is a house of cards.
I think the main problem is thinking Don Batten knows what the heck he is talking about, for
HE confuses and misrepresents the whole thing:
Imagine a population of 100,000 apes, the putative progenitors of humans. Suppose that a male and a female both received a mutation so beneficial that they out-survived everyone else; all the rest of the population died out—all 99,998 of them. And then the surviving pair had enough offspring to replenish the population in one generation. And this repeated every generation (every 20 years) for 10 million years, more than the supposed time since the last common ancestor of humans and apes. That would mean that 500,000 beneficial mutations could be added to the population (i.e., 10,000,000/20). Even with this completely unrealistic scenario, which maximizes evolutionary progress, only about 0.02% of the human genome could be generated. Considering that the difference between the DNA of a human and a chimp, our supposed closest living relative, is greater than 5%,Greater than 98% Chimp/human DNA similarity? Not any more. Journal of Creation 17(1):8–10, 2003.">2 evolution has an obvious problem in explaining the origin of the genetic information in a creature such as a human.
This block head thinks that Haldane's model is about "creating" an entire genome!! That, or he is lying to his target audience, who will almost certainly not know any better and find this a totally awesome argument.
And you fell for it.
(ofourse I am assuming that you are a “selectionists” if you where a “neutralist”, then this argument would not apply)
That argument does not apply because it is stupid and misrepresents pretty much everything about Haldane's model AND evolution in general.
ok, so refute this assertion, or are you going to find excuses for not supporting it?
First - this is HILARIOUS! You want me to "refute" this:
"….therefore 50,000 mutations do not even explain a small portion of the differences between chimps and humans"
which is YOUR unsupported and frankly ridiculous assertion, lest I be considered to have sought an excuse for not supporting it.
As I have already outlined (and you either did not understand or ignored for "plausible deniability" purposes), I do not think some gigantic number of mutations (beneficial or otherwise) are "required" to explain human traits evolved from an ape-like ancestor for the following reasons:
1. There really no 'brand new' traits that humans possess that chimps do not, indicating that our common ancestor also that the same basic traits
2. Therefore, we only need to "tweak" existing traits, and tweaking an existing trait does NOT require some large number of beneficial mutations
3. Support for this - point mutation in the FGFR-3 gene causing achondroplasia - altered limb-to-trunk proportion, altered facial characteristics, reduced joints, etc. All from one mutation. Reminder - I am NOT presenting this as a beneficial mutation, just the reality that MULTIPLE phenotypic traits can be altered, in this case, by a single mutation.
I predict that it will be possible, at some point, to map out specific mutations that resulted in specific phenotypes. We are not there now. But at least I have a foundationally-supported position with an example.
You have mere assertions premised on someone else's mere assertions based on someone else's mere assertions, who premised those assertions on personal incredulity, ignorance, and a desire to sway the under-informed to a creationist viewpoint by arguing with numbers.
Now YOU provide the evidence-based rationale for YOUR position, that "50,000 mutations do not even explain a small portion of the differences between chimps and humans" - and to be specific, this has to be 'fixed, beneficial mutations', because THAT is what Haldane's model and the creationist argument based on that is actually about.
In order for you to make your position valid, you must, at least:
1. Pick a trait that you think is so special in us
2. Identify the ancestral version of it
3. explain how many fixed beneficial mutations would have been required for that transition
4. explain how you know this, with at least a real-life "model" as I presented
OR
You could just admit that you were taken in by Don Batten's distorted misrepresentation of Haldane's model (it is NOT about 'building' a genome!) and ran with it without understanding the premise.
Your move.
And just to reiterate:
Like so many creationists, you do not even grasp the creationist argument re: Haldane's dilemma!
Incredible.....
Let me help you out, as you are clearly in over your head -
Haldane's model was about FIXED, BENEFICIAL MUTATIONS.
NOT total number of mutations. NOT NOT NOT total number of mutations.
Get it?
A 'fixed' mutation is one found in all members of a population.
A beneficial mutation is one that, in a given context, confers an adaptive or reproductive advantage.
So a
fixed, beneficial mutation is a mutation that confers an adaptive advantage that ALL members of a population (species) possess.
THAT is what Haldane's model was about.
The TOTAL number of mutational/DNA sequence differences are 100% IRRELEVANT to 'Haldane's dilemma'!
How can you not know this, even as you hawk the failed 'Haldane's dilemma' argument?
Once you acknowledge your blatant error in understanding the
actual argument that you presented, we can go on to discuss how and when and who it was that 'addressed' the issues I brought up (nobody has), and I can them further refute this mere assertion:
"….therefore 50,000 mutations do not even explain a small portion of the differences between chimps and humans"