Introduction DNA (Deoxyribose Nucleic Acid) is a nucleic acid that has many names‚ each representing the phases that it undergoes (chromosomes‚ chromatin‚ genes/alleles); it resides in the nucleus (bound by 2 *phospholipid bilayers) of almost every cell in the body (red blood cells being an exception). DNA (your genotype) is double stranded and is responsible for replicating (from 46 to 92) during Interphase‚ so that mitosis can make new cells‚ repairing and allowing for growth in the body. It is
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DNA Packaging: Nucleosomes and Chromatin By: Anthony T. Annunziato‚ Ph.D. (Biology Department‚ Boston College) © 2008 Nature Education Citation: Annunziato‚ A. (2008) DNA packaging: Nucleosomes and chromatin. Nature Education 1(1) Each of us has enough DNA to reach from here to the sun and back‚ more than 300 times. How is all of that DNA packaged so tightly into chromosomes and squeezed into a tiny nucleus? The haploid human genome contains approximately 3 billion base pairs of DNA packaged
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The history of DNA structure discovery(sec.4.1): 1869- Johan miescher •studies the nuclei of white blood cells(isolated th material using HCL and digestive proteins •Named the substance nulclein and also found the material was rich in nitrogen and phosphorus. 1919-Pheobus levene •Discovered that DNA was made of chains of nucleotides *see nucleotide structure* 1920 DNAvsRNA * see chart •Thought that 4 nucleotides were connected in the same repeated pattern •protein gas 20 amino acids
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1. Describe what is meant by motivation. What types of non-financial reward might a company use to motivate employees? Ans: Motivation may stem from personal interest such as keeping safe or from external factors such as praise and reward. Non-financial rewards: * appreciation of hard work * a sense of achievement * responsibility and empowerment * opportunity for advancement * a sense of challenge and enjoyment. 2. Describe the effects of an unmotivated workforce on a company. How
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DNA: DNA is a double-stranded nucleic acid that contains the genetic information for cell growth‚ division‚ and function. DNA‚ or deoxyribonucleic acid‚ is the hereditary material in humans and almost all other organisms. Most DNA is located in the cell nucleus but a small amount of DNA can also be found in the mitochondria .The information in DNA is stored as a code made up of four nitrogen bases which are adenine (A)‚ guanine (G)‚ cytosine (C)‚ and thymine (T). these nitrogen bases are bind with
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REVIEW QUESTIONS CHAPTER 1 1. Place the following terms in size order‚ from largest to smallest‚ based on the structures or concepts they represent: a. chromosome b.gene pool c. gene d. DNA e. genome Gene pool‚ genome‚ chromosome‚ gene‚ DNA 2. Distinguish between: a. an autosome and a sex chromosome b. genotype and phenotype c. DNA and RNA d. recessvie and dominant traits e. pedigrees and karyotypes f. gene and genome a. An autosome does
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International Journal of Emerging Sciences ISSN: 2222-4254 1(1) April 2011 DNA Computation Based Approach for Enhanced Computing Power Kashif Hammed Department of Computer Science The Islamia University of Bahawalpur Bahawalpur‚ Pakistan gnetle_kashif@yahoo.com Abstract. DNA computing is a discipline that aims at harnessing individual molecules at the nano-scopic level for computational purposes. Computation with DNA molecules possesses an inherent interest for researchers in computers
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Program Material DNA Worksheet Answer the following in at least 100 words: 1. Describe the structure of DNA. DNA is one of the nucleic acids information-containing molecules in the cell (ribonucleic acid‚ or RNA‚ is the other nuclei c acid). DNA if found in the nucleus of every human cell. The information is DNA: guides the cells (along with RNA) in making new proteins that determine all of our biological traits. DNA gets passed (copies) from one generation to the next. DNA in a cell is really
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DNA molecules are very long. They wrap around proteins and wind tightly‚ forming structures called chromosomes. A human somatic (non-sex) cell has 23 pairs of chromosomes. Twenty-two pairs are autosomes‚ which do not differ between the sexes. The autosomes are numbered from 1 to 22‚ with 1 the largest. The other two chromosomes‚ the X and the Y‚ are sex chromosomes. The Y chromosome bears genes that determine maleness. In humans‚ a female has two X chromosomes and a male has one X and one Y. Charts
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and the discovery of DNA Ralf Dahm* Max Planck Institute for Developmental Biology‚ Department 3 – Genetics‚ Spemannstr. 35/III‚ D-72076 Tubingen‚ Germany ¨ Received for publication 5 October 2004‚ revised 17 November 2004‚ accepted 20 November 2004 Available online 21 December 2004 Abstract Over the past 60 years‚ DNA has risen from being an obscure molecule with presumed accessory or structural functions inside the nucleus to the icon of modern bioscience. The story of DNA often seems to begin
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