Allele

populations come together and reproduce with each other. The offspring from that will be a mixture of the two populations' characteristics. Over the generations, the two populations will become more and more alike. Genetic drift is when the frequency of an allele randomly changes and gets passed down through the…

1) Centrioles are a paired feature of animal mitotic spindles that protrude away from the centrisome of cells and are primarily tasked with the creation of microtubules. The microtubules give way to mitotic spindles, which play a vital role in both mitosis and cytokinesis as they give cilia and flagellum the ability to generate motion and they ensure both newly formed cells contain paired centrioles during the later stages of cell division. Kinetochores are protein structures that produce…

Cross Contamination of Brassica Napus INTRODUCTION Brassica Napus is a bright yellow flowering rapeseed that can be used to create biodiesel, animal feed and vegetable oils. As of 2009, over 90% of Brassica Napus was genetically modified to make it disease and drought resistant. The high rate of the genetic modification of this crop is due to the increased yields of the crops which in turn lead to higher economic returns for the farmers producing the Brassica Napus. (Beckie, 2011). Although…

The interaction process leads to mixing of the alleles of the organisms that are interacting. In the case of animals, the interaction process is facilitated by the migration of animals from place to another. So, the gene flow a result of the migration. The resultant effect of the flow of genes is that it alters the frequencies of the alleles in different populations with time. In adjacent populations, gene flow is likely to reduce variations…

Results: TAS2R38 Gene he TAS2R38 gene, encodes a protein that allows people to taste the bitter chemical PTC. To begin the experiment, each student tasted two separate pieces of paper to show their individual phenotypes. The first paper was a control, and the second paper was PTC paper. If the individual tasted a bitterness while tasting the PTC paper, they were classified as a taster, and if nothing was tasted they were classified as a non-taster (Leicht 165). Once these expected phenotypes…

process takes about 2 weeks, and our data will show five generations. The purpose of this experiment is to identify how different selective forces will influence the evolution of the flies (Franklin, 2014). Evolution is characterized by a change in allele frequencies in a population over time. Sexual and natural selection drive evolution to occur. This can be shown by the conditions of our null hypothesis, the Hardy-Weinberg equation. In it’s conditions it states that random must be mating and…

The major mythical aspect of J.K. Rowling’s Harry Potter and The Prisoner of Azkaban not surprisingly violates the fundamental principles of science. This novel incorporates several ideas that do not have a scientific basis, for example the concept of “transfiguration”, the ability of humans to transform into animals. However, from the standpoint of evolutionary biology, Azkaban provides examples of evolution in practice, including gene expression and hybrid species. It also includes characters…

2. The element being described is Sodium its symbol is Na it has an atomic mass of 22.989769. It has an atomic number of 11. This element has 11 protons, 11 protons, and about 11 neutrons. Protons have a positive charge, electrons have a negative charge, and neutron have a neutral charge. Electron shells are the outer parts of an atom containing the electrons. Valence electrons are electrons in the outermost shell. Valence electrons tell us whether an atom shares, transfers or receives electrons…

the two-hit mechanism is referring to the two alleles of the RB1 gene (Knudson, 1971). The first hit in the heritable form of the disease is a heterozygous germline mutation. The other hit is usually a somatic mutation in the other allele (OMIM). Now, that sets the stage for explaining the reasoning behind why only one eye is affected in the patient. The reason is that…

There is a great variation in food preference among population, which not two individuals having the same food preference. Certain people prefer to eat healthy and consume vegetables, such as broccoli and cabbage, while others may not handle the bitter taste associated with them. In reality, perception of bitter compounds have a particularly important role, not only in health benefits, but help humans distinguish between naturally occurring toxics found in plants that taste bitter. As an example…