Monyhybrid Cross Genetics Lab 1

Monyhybrid Cross Genetics Lab 1 - Monyhybrid Cross...

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Monyhybrid Cross Objective(s): To determine whether or not vg is a recessive allele compared to wild wings and to use Mendel’s law of segregation to see if there will be a 3:1 ratio of wild to vg wings in the F 2 generation. The Chi-square test will be used after the monohybrid cross for a goodness of fit test to prove the 3:1 ratio of wild to vg wings. Variables Independent variables: Cross between vg and wild flies Selection of virgin female flies for P 1 mating Counting the F 2 generation as opposed to the F 1 Time from making the cross to counting the offspring Dependent variables: Number of wild and vg flies counted Hypotheses H0: There is no difference between the numbers of wild vs. vg in the F 2 count and the predicted 3:1 Mendelian ratio. H1: The numbers of wild vs. vg in the F 2 count do not follow a Mendelian ratio of 3:1. Conclusion: I rejected the null hypothesis, there is no difference between the numbers of wild vs. vg in the F 2 count and the predicted 3:1 Mendelian ratio. Introduction:
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This experiment was done to determine that vg is a recessive allele and wild wings are dominant. Also in this experiment I will demonstrate Mendel’s law of segregation to prove that the ratio of the wild wings to vestigial wings is 3:1 in the F 1 generation. Materials and Methods:
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This note was uploaded on 05/07/2008 for the course BIO 3304 taught by Professor Hellack during the Spring '08 term at University of Central Oklahoma.

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Monyhybrid Cross Genetics Lab 1 - Monyhybrid Cross...

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