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Assume the black body female’s genotype to be bb and the wild type male’s genotype to be WW and fill in the following Punnet square. Are your breeding results consistent with what you expect from this assumption and the logic of the Punnet square?

 

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3. Breed two of these F1 flies. To do this select a male and a female from the results of your first cross and put them in the breeding jar. Describe and explain the characteristics of the second generation (F2) flies.

4. Use a Punnet square to predict the ratios of a cross between two Wb individuals. Is this consistent with your experimental observations?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C. Genetic Disorders Library. Describe the three main classes of genetic disorders and give an example of each.

 

 

 

 

Conclusion:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Virtual Lab 4: Electrophoresis

Purpose:

 

 

 

 

 

Lab Observations:

 

 

 

 

 

 

 

 

 

Lab Answers:

1. On what basis is electrophoresis able to separate molecules?

2. What are the lengths of the three DNA bands that you produce in this lab?

 

B.  Electrophoresis. Select the pBR322 plasmid (a circular piece of DNA used as a cloning vector) to analyze (menu in upper left hand corner of the simulator). You will then see a diagram of the circular plasmid DNA along with the points along the length of the plasmid where the various restriction enzymes (EcoR I, Ple I, Hinc II, and Bgl I) will cut the DNA. For instance notice that the enzyme EcoR 1 only cuts the plasmid at one location at the top of the diagram, whereas the other enzymes cut the plasmid at other places. To analyzes the DNA we cut it up with different enzymes and slowly piece together an understanding of the entire sequence.
•    Load each lane as follows: lane 1 with Bgl 1; lane 2 with EcoR 1; lane 3 with Hinc II; lane 4 with Ple I; lane 5 with predetermined molecular weight markers.
•    Run the gel and describe and explain the number of bands in lanes 2 and 4.

 

C. Human Blood Types and Immune System

Complete the following Table

 

Blood Type

Genotype

Antibodies present

Can receive blood from type(s)

O +

 

 

 

O –

 

 

 

A +

 

 

 

A –

 

 

 

B +

 

 

 

B –

 

 

 

AB +

 

 

 

AB –

 

 

 

 

 

Conclusions:

 

 

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