http://www.dnatesting.com/dna-testing-blog/2008/09/a-call-for-help-with-dna-testing-topics/ Paternity Tests, Paternity Testing, and More... Fri, 10 Feb 2012 22:08:29 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://www.dnatesting.com/dna-testing-blog/2008/09/a-call-for-help-with-dna-testing-topics/comment-page-1/#comment-18 Ask Kate Tue, 25 Nov 2008 15:15:36 +0000 http://www.dnatesting.com/dna-testing-blog/?p=82#comment-18 Thank you for your comment. I apologize it has taken me so long to reply. I have been trying to locate answers to your question. The fact is I am not an expert in plant biology. I took my first plant biology class last spring. I am sure you have read many of the sites available online that discuss this subject. I found a book online called The Production of New Potato Varieties by G.J. Jellis & D.E. Richardson on google. I was not able to read all of the preview pages, but I believe this may hold some answers for you. I hope you are able to find what your are looking for. I apologize that I was not able to be more specific. Thank you for your comment. I apologize it has taken me so long to reply. I have been trying to locate answers to your question. The fact is I am not an expert in plant biology. I took my first plant biology class last spring. I am sure you have read many of the sites available online that discuss this subject. I found a book online called The Production of New Potato Varieties by G.J. Jellis & D.E. Richardson on google. I was not able to read all of the preview pages, but I believe this may hold some answers for you. I hope you are able to find what your are looking for. I apologize that I was not able to be more specific.

]]> http://www.dnatesting.com/dna-testing-blog/2008/09/a-call-for-help-with-dna-testing-topics/comment-page-1/#comment-17 william hickey Tue, 18 Nov 2008 19:26:07 +0000 http://www.dnatesting.com/dna-testing-blog/?p=82#comment-17 i am interested in potatoes and recently have been reading about basic genetics to try and understand their genetic makeup. When you grow out the true potato seed (as opposed to the potato tuber)you get tremendous variability with not one tuber being like the parent or like each other. this happens even with self pollination. i assume the 4 sets of chromosomes are identical so why doesn't the variation only reach the level of a diploid plant? also potatoes are considered outcrossers (even though they self pollinate)and so suffer from severe inbreeding depression. If i keep growing the tps will i be able to eventually identify all those with the deleterious recessive genes and discard them and then self pollinate the good ones and wind up with desirable plants? Thanks i am interested in potatoes and recently have been reading about basic genetics to try and understand their genetic makeup. When you grow out the true potato seed (as opposed to the potato tuber)you get tremendous variability with not one tuber being like the parent or like each other. this happens even with self pollination. i assume the 4 sets of chromosomes are identical so why doesn’t the variation only reach the level of a diploid plant? also potatoes are considered outcrossers (even though they self pollinate)and so suffer from severe inbreeding depression. If i keep growing the tps will i be able to eventually identify all those with the deleterious recessive genes and discard them and then self pollinate the good ones and wind up with desirable plants? Thanks

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