In the past six weeks of genetic lab we have been doing an experiment about fruit fly (drosophila melanogaster); we had the opportunity to learn more of how to distinguish between the male and female drosophila; one way that helps me was to look for the sex comb and the size. The purpose of this experiment was to learn more and be able to understand the Mendelian Genetics. We did an actual cross of fruit fly (drosophila melanogaster) such as the monohybrid, dihybrid, X-linked A, X-linked B and three points cross. Finally, we learned how the phenotype is passes from the parent of fruit fly (drosophila melanogaster) to the offspring and we are able to do the test precision of the 3:1(monohybrid) and 9:3:3:1(Dihybrid) ratios.
The model of fruit fly (drosophila melanogaster) is a really great model to work with in the field of biology more precisely (genetics) because it an organism that has been used many times to show scientific principles. We use fruit fly (drosophila melanogaster) as our model in this experiment because they are easy to get (cheap). They are small in size, not dangerous to humans and they have very …show more content…
The 1st cross we did was the monohybrid cross, we cross a male wild type (large red eyes, long wings and yellow brown body) with female apterous( white eyes, mini wings and yellow body with no stripes).We looked for the inheritance of the single trait. Thus, the monohybrid cross match with Mendelian law of segregation because it states that an allele for a single trait must be separate during meiosis into gametes. The monohybrid cross shows an autosomal inheritance due to the 3:1 ratio, ¾ wild type and ¼ apterous in the 1st generation (F1). Our null hypotheses for the monohybrid cross states there will be no significant difference between the observed and the expected results
The model of fruit fly (drosophila melanogaster) is a really great model to work with in the field of biology more precisely (genetics) because it an organism that has been used many times to show scientific principles. We use fruit fly (drosophila melanogaster) as our model in this experiment because they are easy to get (cheap). They are small in size, not dangerous to humans and they have very …show more content…
The 1st cross we did was the monohybrid cross, we cross a male wild type (large red eyes, long wings and yellow brown body) with female apterous( white eyes, mini wings and yellow body with no stripes).We looked for the inheritance of the single trait. Thus, the monohybrid cross match with Mendelian law of segregation because it states that an allele for a single trait must be separate during meiosis into gametes. The monohybrid cross shows an autosomal inheritance due to the 3:1 ratio, ¾ wild type and ¼ apterous in the 1st generation (F1). Our null hypotheses for the monohybrid cross states there will be no significant difference between the observed and the expected results