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doublehelix · January 24, 2013

For every recessive trait that you are looking for you have to multiply x 4.

So if you have two traits it is 4 x 4 or 1 in 16 chance of finding both traits in a single plant. If you have 3 recessive traits then you have 4 x 4 x 4 or 1 in 32. Four traits would be 4 x 4 x 4 x 4 or 1 in 256 chances of finding a plant with all 4 traits.

None of this will apply in the first generaton. In the first generation ALL dominate traits will "dominate" all the recessive traits. If your cross is a good one then you should not see any recessive traits in the F1.

January 24, 2013	#2
doublehelix Tomatovillian™ Join Date: Aug 2010 Location: Central Arkansas Posts: 190	For every recessive trait that you are looking for you have to multiply x 4. So if you have two traits it is 4 x 4 or 1 in 16 chance of finding both traits in a single plant. If you have 3 recessive traits then you have 4 x 4 x 4 or 1 in 32. Four traits would be 4 x 4 x 4 x 4 or 1 in 256 chances of finding a plant with all 4 traits. None of this will apply in the first generaton. In the first generation ALL dominate traits will "dominate" all the recessive traits. If your cross is a good one then you should not see any recessive traits in the F1.