A Study Of Inheritable Traits In Fruit Flies

Genetic trait of Drosophila Introduction Drosophila commonly known as Drosophila is a commonly used species in genetic experiments. In fact, Thomas Hunt Morgan began studying the relationship between genes and specific chromosomes using fruit flies early in the 20th century (Biology 263). Scientists have found over 500 genes on four chromosomes of flies. There are many advantages to using fruit fly for this type of research. Drosophila melanogaster can produce hundreds of eggs after one crossing and has production time of 2 weeks at 21 ° C (Genetics: Drosophila cross 9).

Studies of sexual linked genes by Drosophila are carried out by following dominant wild (+) traits and recessive degeneration (vg) traits. Flies were identified by gender and then placed in labeled vials with media. Virgin fruit fly was confirmed. Please put virgin + in the same vial as vg male to start mating. In about two weeks, Drosophila enters the first generation (F1) from the parent's stage and then enters a new generation (F2, F3, F4 ... ...) every two weeks thereafter. This experiment proved Mendel's second law (independent taxonomy) and was done to prove the results in Morgan's first fruit fly experiment (Wolfe 2000). The results of this experiment demonstrate that the number of dominant traits (wild type) is superior to the latent trait (residue).

In 1910, Thomas Hunt Morgan began using fruit fly genetic experiments in a laboratory called a fly room. The flight room was filled with 8 tables, each table occupied by students and their experiments. They started experimenting with milk bottles to equip them with fruit fly and hand-held lenses to observe its characteristics. After that, we replaced the lens with a microscope to enhance the observation. Morgan and his students have finally clarified many of the basic principles of genetics, such as sexual linkage inheritance, superiority, multiple alleles, gene mapping.

The history of heredity that led to modern human genetics is a good example of these ideas. By studying peas, flies, and mice, I learned the basic concept of inheriting genetic traits from my parents. This, along with the basic efforts to understand the structure and function of this interesting DNA molecule, ultimately led to the explosive expansion of current human genetics. "One of our desires is to become full employment after the end of the war.In order to achieve this goal we need to fully release the creativity and productivity of Americans.Inexpensive products We We are looking for many new and dynamic companies, but new products and processes are not born to mature, they are based on new principles and concepts, new concepts and concepts are basic science. Basic research is the capital of science.