Posted by:
Elaphefan
at Mon Jul 11 17:36:01 2005 [ Email Message ] [ Show All Posts by Elaphefan ]
Hi Paul,
The point of the coin toss example is that we as humans naturally think of events as having connections.
If we go back to the original problem, and we crossed the F1 generation that are Aa for any independent trait, the expected outcome would be a mix of 1:2:1 where, if there were let us say, 20 offspring, 5 would be expected to be recessives, and 15 would be phenotypic wild types. Of the wild types, 10 would be expected to be hetro and 5 would be expected to be homo. So, if I were to choose any of the wild type offspring and ask myself the question “What are the chances of that one snake being homo for the trait that we are looking at?”, the answer would be 1 in 4. The fact that we know what some of the snakes are does not change the odds from the original event for any of the unknowns.
I hope that is clear. How do you get 66% from a single trait F1 cross?
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