Allele

The small genome and the short life cycle of Drosophila melanogaster makes the use of this organism proper to understand the role of signaling pathways, mainly the Notch signaling pathway, in the development of sensory organs in organisms. The molecular interactions of some genes with the Notch signaling pathway can help us understand cell differentiation in sensory organs. The gene Hairless shows high levels of interaction with the Notch signaling pathway of Drosophila melanogaster. Hairless…

Purpose: The purpose of this simulation is to demonstrate how alleles work and practice the skill of figuring out what genotype is dominate based off of the phenotype of the offsprings. Background info: Fruit flies or Drosophila melanogaster work best in experiments because Drosophila melanogaster has 60% of genes that are mutated, amplified, or deleted in human diseases. Drosophila melanogaster also has a short lifespan which makes them best for quick experiments. They also mate and develop…

When both parents are taster and their children not that means that the parent has alleles that are heterozygous dominant therefore their children possess the capability of not being a taster of PTC. 4. The consequence of having a parent that cannot taste the PTC will result if having children that can taste the PTC means that the PTC has…

Theses certain cells are called our sex cells or gametes which are sperm cells in men and eggs in females. This is how sickle cell is passed on to each generation. If one parent maintains the allele that codes for sickle cell, then there is a possibility their offspring will as well. Meiosis happens in two stages called Meiosis I and meiosis II. Within Meiosis I, there are four phases that occur called prophase I, metaphase I, anaphase I, and…

as a change in allele frequencies from one generation to another generation with time. To test the evolution theory, Drosophila was chosen as a great experiment organism because of its short life cycle, rapid development, its small size and the large amount of breeding data can be produced. There are two types of allele of Drosophila observed which are ebony allele and wild-type allele. While wild type allele is dominant and easily found in nature, the ebony type is a recessive allele causing…

Alopecia Areata Alopecia Areata is a common autoimmune disease that affects the hair growth. Although this disease is only passed through genetics, but it differs from a single-gene disease. Both parents have to contribute a certain number of specific genes in order for their child to get this disease. Because of this it is rarely passed from parent to child. Now for identical twins it is much different. There is a very low chance that both twins will get it. There is only a 55% for each…

Drosophila melanogaster is a group of flies normally known as a common fruit fly, and widely used as an experimental organisms because they possess the ability to breed rapidly, survive in laboratory controlled conditions and have observable genetic mutations that enables different phenotypic differences. Dihybrid crosses shows lineages of two observable characteristics in a species, it was found by Gregor Mendel. This allowed scientists to conclude that genetic information can be inherited…

Examining the inheritance patterns of genes of Drosophila melanogaster controlling some traits of eye color, body color, and wing shape by analyzing dihybrid crosses Csilla SzepeIntroduction Our report will describe the experiment of three dihybrid crosses where we would like to understand if certain traits of Drosophila melanogaster follow the pattern of autosomal, unlinked inheritance. The subject of our experiment is the fruit fly because it has a short, two week long life-cycle that allows…

Albinism is a genetic disorder characterized by a minimal production of melanin in the skin due to mutations in several genes. These variety of mutations can result in an immensely lower amount of melanin produced in the skin. For instance, there are four sorts of albinism that are determined by which mutated gene had created the disorder. They consist of oculocutaneous albinism, x-linked ocular albinism, hermansky-pudlak syndrome, and chediak-higashi syndrome. Oculocutaneous albinism (OCA) is…

PSS is not the only example of when artificial selection has gone wrong. There are many positives to artificial selection people just need to become educated and make sure they are not breeding for genes that can have adverse reactions, other than what was originally expected. This does raise the question of the ethics of artificial selection in relation to the quality of life the pigs will have living with the stress gene. Humans have been doing artificial selection for a long time with many…