Yes that particular step could be a result of the mechanism of random mutation, + natural selection......... remember the claim is not that this mechanism can't explain anything, the claim is that this mechanism can't explain everything.
You keep saying that. Evolution doesn’t explain everything, and it was never meant to explain everything.
Why do you think there are active research on the Abiogenesis hypothesis?
Abiogenesis is attempts to explain how life started on Earth, that Evolution doesn’t explain.
But it isn’t just Evolution. Every natural science disciplines are broken down into different fields and sub-fields, which allow for specialized knowledge.
To give you an example, in medical school, you won’t see teachers of dentistry teach students about neuroscience or cardiovascular medicine. Dentistry don’t teach everything about medicine, nor do neuroscience or cardiovascular science.
To give you an example of my experience. When I got out of high school to do civil engineering course, I had to learn many things that are related to design and construction of buildings and sewerage systems, roads and bridges, and so on, and I could specialize in certain areas. One of the many things that I need to learn are some physics that are relevant to this courses, such as Newtonian mechanisms about mass and forces, and hydrology science.
What physics I didn’t need to know, eg (Special or General) Relativity, Quantum Mechanics, Nuclear Physics, Electrical and Electronics, Astrophysics, and so many other physics disciplines I did have to learn, because I don’t require to learn everything.
It would be counterproductive to learn everything. And no science teach everything.
So you repeating yourself with this silly strawman that Evolution can’t teach and explain everything just show how little you understand science.
But guess what, leroy...you believe that god cause everything, especially natural world, and your main sources about god, come from the Bible and church teachings.
And yet the Bible explain absolutely nothing about science behind nature, and the Bible certainly DOESN’T EXPLAIN
“EVERYTHING”.
Nothing in the Bible explain everything about biology, it cannot even explain basic anatomy and physiology of any parts of the human body. It doesn’t explain everything about astronomy.
And in Job 38, it explain absolutely nothing about rain, snow, thunderstorms and sea tides. All you see when reading about God being the cause of everything in Job 38 to 41, ranting like a petty child about his ultimate powers, and yet explain absolutely nothing.
And yet you believe that the Bible being true, particularly in creation, and yet Genesis don’t exhibit any real knowledge about the Earth or anything about life, including human.
In Genesis 2, God creating man from dust, is a perfect example of how little the author(s) understand human anatomy and dust. The whole dust being transformed into living male adult human, is nothing more than make believe fantasy.
Well, the Genesis creation doesn’t explain everything. It explain absolutely nothing, certainly nothing useful.