Sunday, February 7, 2010

In Mendel's basic experiment, he began with true-breeding parental (P) plants. What did he see when he cross-f

In Mendel's basic experiment, he began with true-breeding parental (P) plants. What did he see when he cross-fertilized P plants that had different traits?


A) All F1 plants had the trait of one or the other P plant.


B) The F1 plants showed a combination of the two P traits, in a 3:1 ratio.


C) The F1 plants showed a combination of the two P traits in a 1:1 ratio.


D) The F1 plants had new traits that were a blend of P traits.


E) The F1 plants had an entirely new trait, not seen in either P plant.In Mendel's basic experiment, he began with true-breeding parental (P) plants. What did he see when he cross-f
When Mendel crossed true-breeding tall plants (TT) with true-breeding short plants (tt).





100% of the of the F1 plants were tall (Tt)





The same thing happened when he crossed true-breeding plants for other traits (eg: seed color- yellow or green, seed shape - wrinkled or smooth, pod color - green or yellow, pod shape - inflated or pinched, flower color - purple or white, flower position - axial or terminal)





ALL of the offspring in the F1 generation always exhibited the dominant trait.





So the answer is A) All F1 plants had the trait of one of the other P plant.In Mendel's basic experiment, he began with true-breeding parental (P) plants. What did he see when he cross-f
B)





The dominant and recessive traits create this ratio.





bye for now.

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