Introns and Exons The finding of the Introns and the exons was one of the most significant discoveries in genetics in the past fifteen years. split genes were discovered when lack of relation between DNA sequences were seen during. DNA- mRNA hybridation. For all new mRNA, they must be transcribed by RNA polymerase enzymes. The transcription begins at the promoter sequence on the DNA and works down, thus the nucleotide sequence of the mRNA is complimentary to the one of DNA. In eukaryotes
option=com_content&view=article&id=247&Itemid=185 http://www.hhmi.org/research/telomerase-and-chromosome-ends http://www.dnalc.org/resources/animations/rna-splicing.html http://www.nature.com/scitable/topicpage/rna-splicing-introns-exons-and-spliceosome-12375 http://www.biology-online.org/dictionary/Rna
My passion for research began during the senior year of college when I was awarded the Junior Research Fellowship (~20 out of 500 applicants) to train in Dr. Sriram’s laboratory at the National Center For Biological Sciences in Bangalore, India. During my summer internship, I trained in basic molecular and cell biology techniques to investigate the function of signaling pathways in mitochondrial dynamics. Apart from technical skills, I was exposed to seminars from top scientists in the world, which
Question #101: Genetic coding, expression, transcription and translation Genes are past down from generation to generation and provide genetic coding for each individual and organism. They contain instructions for building proteins (Freeman). DNA and RNA are involved in the genetic up keep of the hereditary information. The hereditary information is then expressed by involving two kinds of products, which include transcription and translation of the genetic coding of DNA or RNA. DNA and RNA
1a. Which Figure 1A or 1B, is of bacterial DNA? Which figure is of eukaryotic DNA? Figure A shows bacterial DNA and figure B shows eukaryotic DNA. In figure A, the DNA is represented as a single, circular chromosome of double stranded DNA, which is characteristic of almost all bacteria. Figure B shows a picture of DNA wrapped in nucleosomes which are fundamental packing units for eukaryotic DNA. Nucleosomes are specific to eukaryotes. DNA is wrapped around histone proteins to form the nucleosome
Organelle Function In the most general terms, the nucleus is the command center of a eukaryotic cell. Although the origin of the organelle is unclear, it is believed that it is derived from a symbiosis relationship between a bacterium and an archaea (Martin W. 2005). Being the main hub for the inner workings of a cell involves different functions overall. These nucleic functions are determined by the genes within the DNA of the cell. Functions of the cell are also regulate by soluble proteins that