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This is a very general overview of basics in the genetics that are involved development of the D. Melanogaster. The main two mechanisms discussed in this article are concentration gradients and morphogens and what genes are used in the development of the anterior posterior axis. The main purpose of this is to give a very basic and quick run through on the matter of genetics in development.
Published by Morrell Chhay 73 months ago in Genetics & DNA | +0 votes | 0 comments
This article discusses how DNA was experimentally determined to be the genetic material container. I discuss the ideas behind viruses and their infection of bacteria as well as my main focus on the experiment performed by Alfred Hershey and Martha Chase. In order to create a better context for the experiment, I briefly talk about two famous experiments that were performed previous to this one, namely Griffith experiment and Avery-McCarty experiment.
Published by Travis Micarelli 73 months ago in Genetics & DNA | +0 votes | 0 comments
This article is an overview of the genetic factor which causes alopecia (more commonly known as hair loss in both men and women). The genetic form of this condition is called androgenetic alopecia, in which a high level of the hormone androgen will cause the hair follicles to shed off of a man's head.
Published by Zuneda Khan 74 months ago in Genetics & DNA | +0 votes | 0 comments
In this article there is overview of how gene expression is important in the Drosophila embryo, as well as how different mutations in maternal genes would affect the developing embryo. The expression of maternal genes is the first step in turning on different genes which will eventually give the Drosophila its phenotypic characteristics.
Published by Herlinda Jimenez 74 months ago in Genetics & DNA | +0 votes | 0 comments
DNA, also known as, Deoxyribonucleic acid, is a distinct type of nucleic acid that contains genetic information, which is used to form the development and activity of all organisms that are living. Many of these living organisms have some of this genetic material, DNA, that is in their cells. DNA is composed of two strands that are wrapped around each other in the form of a helical structure.
Published by Renato Bravo 74 months ago in Genetics & DNA | +0 votes | 0 comments
Pedigree is a diagram that demonstrates the genetic characteristics within a family. The genetic traits may be traced back along the generations. Interpreting the pedigree chart involves the understanding of certain symbols; which may have specific representations among the generations. The commonly used symbol of a circle and square represent the biological sex of an individual.
Published by Iqra Afzal 74 months ago in Genetics & DNA | +0 votes | 0 comments
As of today, we all know that DNA is the hereditary material in all living things. However, how did we come to such a conclusion? It was all thanks to the experiments led by Frederick Griffith and Oswald Avery. GriffithÂ’s experiment found what seems to be a transformation agent that gave life to dead cells. This transformation agent is later identified by AveryÂ’s experiment.
Published by Linh Doan 74 months ago in Genetics & DNA | +1 votes | 0 comments
What is new in the science world today? Genetic Engineering is a big topic that is being studied to prevent disease, increase agriculture growth rates, and help develop vaccines. There is much research being done on it and so far the results look very hopeful. Could it be possible that in the years to come the world will be cancer and diabetes free?
Published by Nora Arnold 74 months ago in Genetics & DNA | +0 votes | 0 comments
An understanding of Mendelian Genetics is needed to begin understanding the elementary topics discussed in any genetics course. One of the most fundamental Mendelian principals is the Law of Independent assortment. With a basic understanding of this principal, linkage, hereditary pathways, inheritance and other vital genetic processes can be explained and understood at a deeper level.
Published by Jennifer Liberto 74 months ago in Genetics & DNA | +1 votes | 0 comments
Mutations are the result of changes in an organism DNA; this is often deleterious as it can alter the expression of genes and cause the generation of impaired or non-functional proteins. The most common types of mutations are substitutions, insertions, deletions, and frameshifts. Substitutions are the switching of nucleotide bases, insertion and deletions are the caused by adding or removing nucleotides. Frameshifts are caused by insertions and deletions and result in the misreading of genes. ...
Published by Julio Zamora 74 months ago in Genetics & DNA | +0 votes | 0 comments
A brief overview of sickle cell anemia and the genetic mutation that causes an amino acid substitution in hemoglobin, which also causes the red blood cell to take on the characteristic sickle shape. Individuals who are carriers for the trait but do not have the disease have a distinct advantage in malarial areas, as they are resistant to malaria.
Published by Wai Szeto 74 months ago in Genetics & DNA | +0 votes | 0 comments
Three Point Test Crosses are allows geneticists to analyze at the gene order of loci, distances between the loci, and their linkage relationship. This article is an explanation of how to use and analyze three point testcrosses of trihybrid heterozygous crosses and how to analyze and utilize the information about recombination.
Published by Guillermo Llamas 74 months ago in Genetics & DNA | +0 votes | 0 comments
This is a quick guide to solving three point test cross problems as well as interference. An example is used from a textbook and is completed thoroughly with explanations. This is relevant in any genetics field where one needs to map out relative distances of gene loci and figure out the order of the loci as well.
Published by Michael Villegas 74 months ago in Genetics & DNA | +0 votes | 0 comments
From disease causing bacteria, Streptococcus pneumoniae, the “transforming principle”, or the genetic alteration of a cell from outside genetic material through the cell membrane, was discovered in the Griffith Experiment. This laid the foundation for the Avery-MacLeod-McCarty experiment which proved DNA to be the source of genes, and not protein.
Published by Aaron Tabuchi 74 months ago in Genetics & DNA | +0 votes | 0 comments
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