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Physical relationship between genes and chromosomes

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Reference no: EM132704084

1. Explain how the Morgan's work in fruit flies provided evidence for a physical relationship between genes and chromosomes.

2. Describe the difference in inheritance patterns of genes located on the sex chromosomes. Use Punnett squares to help illustrate your point.

3. What does X inactivation refer to? Provide an example of how this might be expressed
phenotypically.

4. What does gene linkage refer to? Explain how data on recombination of linked genes led to the first chromosome maps.

5. Describe crossing over and when it occurs.

6. Define the following: nondisjunction, aneuploidy, monosomic, trisomic, polyploidy.

7. Describe the following changes in chromosomal structure: deletion, duplication, inversion, translocation.

8. Describe the following patterns that are exceptions to Mendelian inheritance and why: Genomic imprinting, extranuclear genes.

Reference no: EM132704084

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