September 18‚ 2011 Period 8 AP Bio Ms. Dahle September 12‚ 2011 TITLE: Population Genetics and Evolution Within a Gene Pool INTRODUCTION: The Hardy-Weinberg scheme is a way of viewing evolution as changes in the frequency of alleles in a population of organisms. If A and a are alleles for a particular gene and each individual has two alleles then p is the frequency of the A allele and q is the frequency of a alleles. The frequency of the possible diploid combinations is expressed in the equation
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attached to the 5’-carbon of the ribose. Nucleotide units line up forming the backbone of RNA / DNA. 1A. Typical DNA Molecule DNA is a complex molecule that is found in all living organisms. Constructing DNA models is a great way to learn about DNA structure‚ function and replication. DNA contains the genetic information for the reproduction of life. Its structure is that of a twisted double helix that is composed of long strands of alternating sugars and phosphate groups‚ as well as nitrogenous
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Are GMO’s are No or Go? There is much controversy over whether or not GMO’s‚ or genetically modified organisms‚ benefit us and should be allowed‚ or if they are more harmful and should be banned. Genetically modified foods are beneficial because they save money‚ have greater resistance to pests and viruses‚ and they can hold more nutrition than regular foods. One of the crops that have most widely been genetically modified is corn. Biologists can inject genes in the corn that make the corn resistant
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with DNA from different species of living organisms‚ bacteria‚ or viruses to get desired traits such as resistance to disease or tolerance of pesticides. How do scientists Genetically modify organisms? Genetically modifying organisms works just like an advanced form of cut and paste. During genetic modification‚ DNA is taken from and unrelated plant‚ animal or bacteria and inserted into a different organism to get it to produce the desired traits. The DNA is“cut” from one organism and “pasted” into
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POPULATION GENETICS (FRUITFLY) NAME: Christopher N. Anah CLASS: BIOL 2108L INSTRUCTOR: DR. JAMES BATTEY OVERVIEW: In this lab the Drosophila melanogaster fly species were used to do genetic test crosses. Students were taught how to manipulate phenotypes‚ collect data from F1 through the F4 generations‚ and analyze the results.INTRODUCTION: The basic principles of genetics are very often shared by a vast array of organisms. For that reason‚ it is usually only necessary to study the genetic structure
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responsible for the white eye phenotype of two strains of Drosophila melanogaster. According the literature‚ the w+ gene is located on the X chromosome at 1.5 genetic map units (1). In addition‚ the st+ and bw+ genes are autosomal and assort independently‚ meaning they are two different genes located on two different chromosomes. It is stated that the bw+ gene is located on the 2R chromosome at 104.5 map units (2) and the st+ gene is located on the 3L chromosome at 44.0 map units (3). Our hypotheses suggested
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A Human Is A Complex Organism Human beings are complex and special organisms as there is a complex organisation of cells in the human body. The organisation in the human body is summarised as follows: Cells—> Tissues—> Organs—> Systems—> Organism.The same type of cells which carry out a specific function are organised into a tissue. For example‚ a group of nerve cells form a nerve tissue. They are organised to work together to perform specific functions as the result of cells in the human body
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GENETICS EXAM I You may write all over this exam‚ but only your #2 pencil answers on the blue opscan sheets will be graded. Bubble-in only one answer for each question; there are no purposely tricky questions. If you think you have found a trick question or a question is not clear‚ ASK when leaving the exam room. You may leave when you are done. 1. Chromosomes‚ colored bodies‚ are composed of proteins and DNA; so are chromatids. At metaphase I there are 46 chromosomes aligned
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Carbon dioxide is both a vital requirement for producers – the first organisms in any food chain‚ and at times a dangerous waste product. Where plants use carbon dioxide during the Calvin cycle of photosynthesis‚ at night they also produce small quantities due to respiration. Fundamentally‚ carbon dioxide reacts with ribulose bisphosphate to produce glycerate 3-phosphate in the light independent reaction. In turn glycerate3-phosphate is reduced to triose phosphate using reduced NADP
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Reshmi Radhakrishnan‚ TA: Jared Tues Rm 24 Experiment 6 Purpose: To analyze if diploid yeast strain heterozygous for ARG8 ADE2 HIS3/arg8 ade2 his3 on chromosome XV and TRP1/trp1 on chromosome IV irradiated with UV light underwent mitotic recombination to form homozygous recessive ade2/ade2 mutants. The ade2/ade2 mutant are selected then plated on different media to observe if the homozygous recessive mutants were due to mitotic recombination. Controls: If all the red cells grew on the CSM-Trp
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