Step 2. Observe adults First, to observe the adults, two capped glass vials containing culture medium and Drosophila from larva to adult stages were obtained. Each of the two vials was carefully observed one at a time for natural and mating behavior.…
Did research on what males and females look like. We observed the frozen flies. On the first week we used fly nap as an anesthetic for the flies and waiting for them to fall asleep. We sexed the flies and put 10 male and 10 female into a tube.…
The affected phenotype in the mutant hot cheeto is the bristles. The affected bristles are gnarled, dark, and bending to the side of the scutum. The tip of these bristles look melted. The sizzled appearance of the phenotype makes the name of hot cheeto appropriate for this mutant. The bristles of the wild type Drosophila melanogaster are long, slick, and black.…
Mendel studied genetics using flowers and pea plants. In a monohybrid, concerning one trait, cross, he crossed a purple (PP) plant with a white (pp) plant, and the offspring were all purple (Pp). He also crossed yellow, smooth peas (YYRR) with green, wrinkled peas (yyrr), which is a dihybrid cross because it involves 2 traits. The offspring of the cross, called F1 offspring because they are the first generation, resulted in 100% round (Rr) and yellow (Yy). The offspring were then intercrossed, and the offspring (F2 generation) resulted in 9:3:3:1 round and yellow (RRYY), round and green (RRyy), wrinkled and yellow (rrYY), and wrinkled and green…
Morgan had a very keen sense towards teaching. He is also known as being a successful teacher. He began to research sex linkage on the fruit fly, or Drosophila, in 1909. Before his discovery, the world had thought that the chromosomes were fully formed adults already present in the egg or sperm. People did not have the knowledge to test that theory, until Thomas Hunt Morgan began to research the chromosomes of the male fruit fly (Thomas Hunt Morgan, American Biologist, n.d.).…
We hypothesized that curly wing flies would have difficulty courting past the flapping of its wings to create a “love song”. The FraxE flies are model organisms of a mutation that causes mental retardation and various behavioral problems. We did not expect very much courtship at all in this group. Lilli flies were similar to the FraxE model except they had the protein that was lost with the mutation placed roughly 50% back into them. We thought the flies with this mutation would have more courtship then the FraxE but less than the curly wing fly.…
As a group we have taken two sterile plastic vials and placed a cup of Drosophila medium powder into each one. After adding a cup of the medium with added half a cup of distillated water into the plastic vial, which allowed the medium to dissolve into it. We allowed a few minutes for the media to be absorbed and afterwards we applied a cotton plug to close the entrance to the vial. Anesthetizing the Drosophila flies In the lab, we had the fruit flies already asleep in a green bucket filled all the way up with ice.…
Both male and female mutants did not show significant phenotypic differences. The adult flies and newly enclosed mutants…
The apterous gene mutations is a recessive trait that is inherited causing a varying phenotypes such as different wing deformities. Other phenotypes observed are the decrease in life span and female sterility. Ap is required to regulate gene expression needed for the development of Drosophila wings and haltere discs. Decreased ap activity due to the overexpression of dLMO results in wing mutations. The phenotypes displayed in apterous mutants are places them at a disadvantage compared to wild type flies.…
Throughout the article, this claim is supported by mainly primary sources, including anecdotes about the fruit fly Drosophila, the Human Genome Project, and newspaper articles. One example given…
Gene crossover, the exchange of genetic material between two homologous chromosomes, can be observed in many different instances with the help of model organisms. Many scientists observe gene crossover to better comprehend the heritability patterns of unrelated genes (Chen and Olive, 1965). In the case of this experiment, the use of Sodaria allowed students to observe the inheritance pattern of two different phenotypes when crossed in a a petri dish (Saleem, et al., 2001). Sordaria, a microfungi commonly found in feces of herbivores, was the subject of this study. Using Sodaria, students were able to observe random genetic crossing due to a mutation that the test subject underwent many years ago that only allows it to mate via sexual reproduction.…
In every cross we saw this, but I’m going to use the second cross as my example. In the parental generation, all of the flies were either red eyed females or white eyed males. In the next generation, there were a quarter of each type. This showing that some traits are going to be recessive, and masked when the dominant trait will also be present. We know that the fruit flies follow these patterns, because when we all counted them out, mostly were close the expected amount of each type.…
The purpose of this lab is to use genetic crosses to illustrate the principle of segregation, the law of independent assortment and sex-linkage in the fruit fly Drosophila…
This experiment is concentrated on two types of Drosophila melanogaster flies: wildtype and the vestigial. The vestigial flies have small, shriveled wings caused by the mutation on the second chromosome. This mutation is recessive, so in order for the flies to display shriveled wings they must carry the mutation on both copies of the chromosome (Franklin, 2014). The reason why our experiment is focused on the wings of these flies is because Drosophila melanogaster males perform mating dances that involve them extending their wings and vibrating rapidly. Presumably, the successfulness a male has in mating will be in large contributed to the types of wing a fruit fly has and its ability to perform an attractive mating dance.…
Fist I ordered a female that had a certain phenotype and a male that had a different phenotype. The female’s genotype was DD when it was Wild type and tr. when it had a black body and sepia eyes. The male’s genotype was dd when it was Vestigial and TR when it had a tan body and red eyes. After mating the flies and waiting “Two weeks” which was really a few seconds for the offsprings to develop, I sorted the flies under the microscope. I then counted the offsprings and how many were Wild type and how many were Vestigial and later with the offsprings of the Drosophila melanogasters that had tan and black bodies with sepia and red eyes.…