Dave Cushman wrote:
>
> My use of the word linkage in my post was not intended to equate to 
> 'genetic linkage', but to illustrate that a factor can be derived by 
> different routes. 
The latest info on this makes much of what we thought was a simple 
exchange at specific sites to be not quite true, so linkage is an 
excellent word. It has gotten much more complicated with various sites 
being crucial for a trait as well as more things happening at a single 
site than what was thought to be true. Much more complicated than we 
thought with RNA and proteins all in the mix to a greater extent. I 
thought I understood genetics but it has gone way beyond my pay grade. 
Anyone using a textbook is out of date.

Always appreciate your posts as informative and well thought out, even 
when we disagree :)

Bill Truesdell
Bath, Maine

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