"Investigate a disease that is caused by chromosomal mutations when does the mutation occur what chromosome is affected what are the consequences" Essays and Research Papers

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    Gene Mutations

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    GENE MUTATION‚TYPES OF MUTATIONS 1. Gene Mutation A Gene Mutation is defined as an alternation in the sequence of nucleotides in DNA. It can affect a single nucleotide pair or larger gene segments of a chromosome. Mutations cause changes in the genetic code which lead to genetic variation and the potential to develop disease. What causes Gene Mutation? → Gene mutations are most commonly caused as a result of two types of occurrences. 1. Environmental factors Ex) chemicals‚ radiation

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    Mutations in Dna.

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    such as the DNA that is duplicated but changes in the DNA do occur‚ producing mutations. Although most mutations are either neutral or harmful they are also the raw material for evolution. Such mutations from alleles‚ alternate forms of a given gene that may produce differences in structure or function such as black‚ brown or blond hair in humans‚ or different mating calls in frogs. Stages of Mitosis~ 1)Parent cell. 2)Chromosomes make identical copies of themselves. 3)They line up along the

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    Name Class Date 13.3 Mutations Lesson Objectives Define mutations and describe the different types of mutations. Describe the effects mutations can have on genes. Lesson Summary Types of Mutations Mutations are heritable changes in genetic information. There are two categories of mutations: gene mutations and chromosomal mutations. Gene mutations produce changes in a single gene. Point mutations involve only one or a few nucleotides. Substitutions‚ insertions‚ and deletions are

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    a mutation story

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    01/08/14 A Mutation Story Have you ever wondered about the genetic mutation that affected the population of West Africa? Well‚ I always had that thought in my mind! So I thought why not write about it. So I did! The article that I chose was “A Mutation Story” from http://sepuplhs.org/. This section tells the story of a genetic mutation affecting the population of West Africa. Even though this mutation is helpful in avoiding malaria‚ this mutation can also lead to sickle cell anemia

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    Mutations Abstract

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    July 2011. Web. 19 Sept. 2011. . What do you think about when you hear the word mutant? You probably think about a big‚ alien-type monster with many horrendous attachments‚ or those teenage‚ crime-fighting turtles. The truth is‚ everyone is a mutant. Our bodies all contain mutations. They are what make humans so diverse in terms of attributes. Mutations are changes‚ or mistakes‚ in our genetic code‚ or DNA. These changes are normal‚ and although some mutations can be harmful‚ or even beneficial

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    Parkinson disease appear to be random cases‚ but new studies have shown that specific genetic defects may increase the chances of developing Parkinson disease. Ten “Parkinson Disease Genes” have been identified‚ but only three specific genes have been found to be directly related to causing Parkinson disease. Recent investigations in familial-linked Parkinson disease have found that mutations in α-synuclein‚ parkin and DJ-1 have been clearly linked to Parkinson disease. The mutation in the α-synuclein

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    Are all mutations harmful

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    “All genetic mutations are detrimental and are harmful to the organism.” Discuss with examples Mutations are random changes to the genetic material; this could either be a chromosome mutation which involves changes in the whole or part of the chromosome or DNA mutations which is where the changes are to the nucleotide base sequences. The ‘change’ to DNA is either a base deletion‚ substitution‚ addition or by inversion or repetition of a triplet. Many cases of genetic mutations can be very harmful

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    Pathophysiology Main article: Carcinogenesis Cancers are caused by a series of mutations. Each mutation alters the behavior of the cell somewhat. Cancer is fundamentally a disease of failure of regulation of tissue growth. In order for a normal cell to transform into a cancer cell‚ the genes which regulate cell growth and differentiation must be altered.[40] The affected genes are divided into two broad categories. Oncogenes are genes which promote cell growth and reproduction. Tumor suppressor

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    Brca1 and Brca2 Mutation

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    Scholarship gives an insight as of how a group of woman with a BRCA1 or BRCA2 mutation cope over many years after genetic testing. Between the years of 2002 and 2003‚ 29 women who tested for Hereditary Breast and Ovarian Cancer (HBOC) or Huntington disease completed interviews and agreed to do another interview later. Within the 29 participants includes 20 people who tested for HBOC and 9 people who tested for Huntington disease. The 20 individuals that were at risk for HBOC consisted of two groups

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    A mutation is a change in DNA. To be more specific‚ it’s a change in the arrangement of bases in an individual gene or the structure of the chromosome which changes the arrangement. There are many types of mutations such as point mutation‚ frameshift‚ and chromosomal mutations. Each kind can either be very effective or not change much at all. It depends on the exact case and which kind it is. Some are more severe then others‚ for example point mutation is much less harmful then chromosomal mutation

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