Complex inheritance webquest (1).dotx

Complex inheritance webquest (1).dotx - NAME_Caroline...

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NAME:___Caroline Guerrero_____________________________ Complex Patterns of Inheritance Questions from WebQuest Introduction A variety of inheritance patterns are more complex than Mendel had realized. Many of these do not obey one or both of his laws of inheritance. The table below includes descriptions of the basic Mendelian pattern of inheritance as a basis for comparison to other more complex patterns. Epistasis 1-Alleles of one gene mask the expression of the alleles of another gene 2-Often arise because two or more different proteins are involved in a single cellular function. Usually there are two or more alleles governing one trait. Which genetics problem did we complete last week that demonstrates epistasis? ____The multiple alleles _________________________ 3-Another example is the unexpected gene interaction discovered by William Bateson and Reginald Punnett in the early 1900s, when they were studying crosses involving the sweet pea, Lathyrus odoratus. They crossed true-breeding purple flower plants with true-breeding white flower plants (true breeding means that the plants have a homozygous genotype). If we assume that the purple color is dominant and that only one gene is at work, what would have been Mendel's prediction for the F1 generations (show the Punnett square)?
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  • Fall '07
  • Genetics, Punnett square, ___Caroline Guerrero_____________________________

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