biologist August Weismann‚ who noted that two cell divisions were necessary to transform one diploid cell into four haploid cells if the number of chromosomes had to be maintained. In 1911 the American geneticist Thomas Hunt Morgan observed crossover in Drosophila melanogaster meiosis and provided the first genetic evidence that genes are transmitted on chromosomes. The term meiosis was introduced to biology by J.B. Farmer and J.E.S. Moore in 1905 Meiosis i/maɪˈoʊsɨs/ is a special type of cell division
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Question 1 2 out of 2 points Which of the following statements about meiosis is true? Selected Answer: a. The chromosome number in the resulting cells is halved. Question 2 2 out of 2 points The mitotic spindle Selected Answer: e. is composed of two different types of microtubules. Question 3 2 out of 2 points A chromatid is Selected Answer: e. one-half of a newly replicated eukaryotic chromosome. Question 4 2
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orientation‚ and reproductive. Orientation is when the organism is placed in their beneficial environment consisting of two behaviors‚ taxis (movement directly towards or away something) and kinesis (random movement). Reproductive is detected using drosophila in this lab‚ it consists of finding courting and mating with another of the species Agnostic behavior is found in a situation where the animal feels threated by another‚ leading to the organism looking bigger or more threatening to the opponent
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Cited: "Culture." Oxford Dictionaries Online. 5 December 2012 <http://oxforddictionaries.com/definition/american_english/culture?region=us&q=culture>. Edwards‚ Alexis‚ et al. Quantitative Genomics of Aggressive Behavior in Drosophila melanogaster (2006). "Evolution." Oxford Dictionaries Online. 10 December 2012 <http://oxforddictionaries.com/definition/american_english/evolution>. Haviland‚ William‚ et al. Anthropology: The Human Challenge. Wadsworth: Cengage Learning
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Level * 2 3 0 8 9 6 9 9 7 3 * BIOLOGY Paper 5 Planning‚ Analysis and Evaluation Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black ink. You may use a pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters
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MEDICAL IMPLICATIONS A genetically modified organism (GMO) is an organism whose genetic material has been altered using genetic engineering techniques. Organisms that have been genetically modified include micro-organisms such as bacteria and yeast‚ insects‚ plants‚ fish‚ and mammals. GMOs are the source of genetically modified foods‚ and are also widely used in scientific research and to produce goods other than food. HUMANS Human gene therapy Gene therapy is the use of DNA as
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Introduction This case study based on an elderly man named David is 56years old and has a number of personal health issues that are affecting his daily life and on top on that his wife has a history of breast cancer. The evidence-based practice is a clinical activity which is based on the belief that decision about the delivery of care to clients should be informed by the best available and current scientific evidence (Beanland et al 2011). So as a nurse it is important to understand
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Amelie: Technical Considerations to help you appreciate the film This resource is designed to be used with clips from the film Amelie‚ as part of an ‘Auteur Study’ of Jean-Pierre Jeunet‚ director of Delicatessen‚ City of Lost Children‚ Amelie and A Very Long Engagement‚ as well as his Hollywood foray‚ Alien Resurrection. The techniques used by director Jean-Pierre Jeunet and cinematographer Bruno Dubonnell are primarily used to create the tone and atmosphere appropriate to the genre of this
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success led her to begin writing other novels‚ such as Of Love and Shadows (1984)‚ Eva Luna (1985)‚ and The Infinite Plan (1991). In 1994 she wrote Paula after her daughter’s death. Later came Aphrodite (1997)‚ Daughter of Fortune (1999)‚ Portrait in Sepia (2000)‚ My Invented Country (2003)‚ Ines My Soul (2006)‚ and Island Beneath the Sea (2010) (“Isabel Allende”-MAS Ultra). All her work was written in her native Spanish‚ but has been translated into over 35 languages. She has sold over
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The relationship that a teacher and student share is of trust‚ respect and devotion. Teachers influence their students by shaping their rational and moral virtues and hence‚ play an important role in molding the society as a whole. The education system of ancient India and Greece shared some common characteristics. In both cultures‚ teachers and their disciples conglomerated at specific places earmarked for educational purposes. This is where students gained both spiritual and material education
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