Lab Report

Lab Report - A gene is the functional unit of heredity. The...

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Neal Johnson Group: Skye, Angelica, Jennifer Cell Biology Monday, May 11, 2009 Introduction This report presents an interactive way of passing genetic and hereditary inform- ation in fruit flies. This lab is very similar to the experiments Mendel did with pea plants. We are going to use flies instead of pea plants, but the steps we take in the lab are very similar to the ones in Medel’s. We take two flies, and breed them to make the F1 gener- ation then cross breed those offspring to make the F2 generation. We are using fruit flies because they have noticeable phenotypes, the physical characteristics we can see, of a trait. These traits are male and female, or regular wings and deformed wings. Traits are represented by either a capital letter for the dominant gene, or a lower case letter for the recessive gene.
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Unformatted text preview: A gene is the functional unit of heredity. The dominant gene, if present in the DNA, will always show its phenotype. The recessive genes phenotype will only be present if there is no dominant gene of the same trait. We can determine what traits the flies' offspring will have by diagraming on a punnett square. They look kinda like this. (Schau, 2007) AA is a example of a Homozygous Dominant because it has two of the same letters and they are both capitals. Aa is an example of a Heterozygous gene because it has alternating alleles. An allele is an alternating form of the same gene. aa is an example of a Homozyg-AA Aa Aa aa Example Punnett Square ous Recessive gene because it has two of the same letters and both are lower case. (Schau, 2007)...
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Lab Report - A gene is the functional unit of heredity. The...

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