It occurs to me that you might not understand the depth of the pool into which you are dipping your toe, Valerie.
It’s good that you are curious and thoughtful, of course. But the academic biologist, of whom there are many on this forum, has spent literally decades immersed in the subject. He or she has spent decades in the lab, on the computer, interacting with colleagues, reading and writing peer-reviewed papers.
I have hung out on forums for about a decade with these folks, but so often I feel like a beginner. I can typically gain a pretty good feel for mathematical models when I interact with the experts, but there’s so much I have not learned yet, and will probably never learn.
So when you mention a particular mutation in a particular gene in a particular species, a professional biologist has a deep context for understanding it. He or she understands the typical distribution of kinds of mutations (there are many), the typical distribution of selection coefficients for mutations, the typical effects of those mutations in population genetics models. He or she has read much of the vast literature in which these ideas are discussed, the fieldwork is analyzed, the mathematical models dissected.
To explain to you how an evolutionary biologist looks at a particular set of alleles in canines, therefore, the biologist would have to write many, many pages. It’s a highly complex field that takes decades to master, after all.
When someone who does not share this background comes to the forum and says, “Hey, I see a particular mutation in a particular gene and it looks like YEC explains it better than evolutionary biology,” the biologists therefore have a hard time knowing where to start. Do they spend hours upon hours giving you all the context through which they process a datum about a single mutation? How many people have that kind of time? So they try to boil their response down to a couple of succinct sentences.
To the biologist, those sentences make a lot of sense in light of the context they possess from their decades of study. Someone who does not share that context, however, would likely not understand how the brief response make sense in light the broader field of biology. The person who does not have that context might therefore conclude this, with regard to the biologist’s response:
What you are looking for you may not be able to find, packaged in digestible form, on a forum like this. You might need to take some courses taught by evolutionary biologists if you want to understand the discourse on this forum in a more satisfying way. There are even some free or very low cost courses (MOOCs) that could help, or so I have heard. If you ask for a recommendation, I am sure someone could point you in a productive direction.
Who knows where such a journey would end up, once you start? Given your curiosity, thoughtfulness, and determination, I am sure it would be an interesting and fruitful journey.
Grace and peace,
Chris