lab1absract - the primary vial failed to produce crossed...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Mendelian Inheritance patterns in Drosophila melanogaster for the Bar, Sepia, and Dumpy Wing phenotypes Drosophila melanogaster is a model species suitable for genetic studies due to their small generation times and mutant traits that have readily visible phenotypes and occur in mendelian inheritance patterns. The Bar, Sepia and Dumpy wing mutations of the Drosophila melanogaster occur with these desirable characteristics. Here I investigated these inheritance patterns for the Bar, Sepia and Dumpy Wing mutations in Drosophila melanogaster by a 1 generational reciprocal cross. Utilizing true breeding species of strain 3 (bar) and strain 2-3 (sepia, dumpy wing ), I crossed virgin females of strain 3 and males of strain 2-3, and additionally virgin females of strain 2-3 and males of strain 2-3. For first generation offspring populations (F1) I determined the phenotypic amounts present. The F1 offspring of the female strain 3 and male strain 2-3 in the back up collection vial were composed entirely of all bar phenotype (15 female and 19 male),
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: the primary vial failed to produce crossed offspring (sepia and dumpy wing type offspring were collected in the contaminated primary vial). The F1 offspring of the female strain 2-3 and males strain 3 in the primary collection vial contained 35 bar phenotype females and 23 normal type males, the backup vial contained 21 bar phenotype females and 18 normal type males. Analysis of the obtained data sets, yielded the Bar mutation to be X-linked dominant, the dumpy wing and sepia mutations to both be autosomal recessive. Due to one cross containing only one vial, accuracy for that portion of the cross is lower than acceptable. Future studies will reduce this and other inaccuracies by collecting more parent Drosophila melanogaster , creating more crosses, increasing the number of Drosophila melanogaster tested, utilizing multiple separate collection vials and each cross population being carried out to the F2 generation....
View Full Document

This note was uploaded on 09/21/2008 for the course BIOL 18a taught by Professor Kosinski-collins during the Spring '08 term at Brandeis.

Ask a homework question - tutors are online