limitations of DNA and human remains in archaeological research using two case studies. The first case study focuses on the potentials and limitations of the extraction of Mycobacterium Bovis from DNA to further understand the pathological history of societies in Southern Siberia. The second case study looks into the successful reconstruction of DNA sequences from Neanderthal fossil remains and the limitations that appeared during its study. DNA analysis has made a historical impact to the processes of Archaeological research in human remains and has certainly manifested more potentials than limitations. The reduction of its limitations being a focus for more accurate research will prove to useful…
For the week of 4/9 to 4/13, we completed several worksheets related to DNA structure, replication, and sequencing. We also took notes and discuss about how the scientists discovered the properties of DNA. Beyond what they discovered, we learned that radiation can affect one’s offspring through changes in the DNA sequence or gene expression. In the process of discovering that DNA was the genetic material, Fred Griffith used mice to test two strains of S.pneumoniae. The rough strain is…
In the magazine article titled “The Case of the Missing Ancestor” by Jamie Shreeve published by National Geographic, it discussed activities that occurred to determine the existence of Denisovans. The discovery of human fossils, DNA sequencing and comparison to previously established human species are justifications for Denisovans significance to the ancient human past. The discovery of Denisovans and linkage to human past is a…
DNA ISOLATION INTRODUCTION: Deoxyribonucleic acid (DNA) isolation is an extraction process of DNA from various sources. Methods used to isolate DNA are dependent on the source, age, and size of the sample. Despite the wide variety of methods used, there are some similarities among them. In general, they aim to separate DNA present in the nucleus of the cell from other cellular components. Isolation of DNA is needed for genetic analysis, which is used for scientific, medical, or forensic…
guilt in a suspect means the use of DNA to determine if the suspect was at least present at the crime scene is a powerful tool because no one person can change their DNA at will. The use of DNA as way to identify people has it 's origins in the United Kingdom because of a technique created by Dr. Alex Jeffreys used to relate DNA to each other and to DNA found at a scene(Herrera 74). This process is called DNA fingerprinting(Herrera 74) and is used in criminal forensics to help prove both guilt…
Once upon a time, there was another DNA molecule, this time inside of a bacterium. This DNA decided that she wanted to create a new friend that was like her best friend but a little different and much smaller. This new friend would be called RNA, and through gene expression, would create a polypeptide. DNA decided, that in order to insure the completion of gene expression, she would create messenger RNA that would be called mRNA for short. The process of created this new mRNA was called…
Title- DNA FROM TOOTH- PRACTICALITIES AND FEASIBILITIES Introduction – In forensic cases, where human remnants are extremely destroyed and degraded, teeth may be the only available source to divulge the identity of an individual. Human identification is a complex issue that is usually addressed by forensic experts, biologists, odontologists and anthropologists. Use of teeth in the investigations is favored generally to maximize the scope for identification. Radiocarbon dating of the enamel of…
Lynchel Brumaire DNA, the genetic code of all organisms, can help in the analysis of the organisms evolutionary history. All organisms, alive and extinct, descended from one creature. As time went on mutations accumulated in the DNA sequence of the progeny. By sequencing the genetic code of an organism in relation to another, their evolutionary history can be placed onto a phylogenetic tree. In this experiment, DNA barcoding was used to to identify a species and place it onto a phylogenetic…
the deoxyribonucleic acid (DNA). DNA is long chains of nucleotides that carries genetic information that is very crucial in human development. Based on the molecular structure of DNA, it is made of two nucleotide strands and arranged in such manner in which they coil…
DNA is a macromolecule that is used for instructions when creating proteins and other activities. It is because of this that DNA (and other nucleic acids) are essential for life to exist. DNA contains genetic code that primarily directs organelles in a cell to operate in a certain way. DNA also carries information regarding the traits of an organism. These traits are often passed from a parent cell to its offspring. This branch of biology is know as genetics. DNA also possesses a unique…