A patient has discovered a lump in their breast. The doctors decide to biopsy (take tissue samples from) the lump. They take 7 tissue samples from different regions of the lump. Would you expect the genetic profile/mutations in every single sample of cells to be the same? Why or why not?
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7) A patient has discovered a lump in their breast. The doctors decide to biopsy (take tissue samples from) the lump. They take 7 tissue samples from different regions of the lump. Would you expect the genetic profile/mutations in every single sample of cells to be the same? Why or why not?
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- Original DNA Sequence: TACAC CTTGG CGACGACT... MRNA Sequence: Amino Acid Sequence: Mutated DNA Sequence #5 TACACCTT G G GACGACT... (Highlight the change) What's the mRNA sequence? What will be the amino acid sequence? Will there likely be effects? What type of mutation is this? 1. Which type of mutation is responsible for new variations of a trait? 2. Which type of mutation does not result in an abnormal amino acid sequence? 3. Which type of mutation stops the translation of an mRNA molecule? NOA 45-year-old woman undergoes genetic testing and discovers that she is at high risk for developing colon cancer and Alzheimer disease. Because her children have 50% of her genes, they may also be at an increased risk for these diseases. Does she have a moral or legal obligation to tell her children and other close relatives about the results of her genetic testing?How can you treatment for the genetic disorders by using gene therapy? Please answer at your own words, please..
- 1.What types of enzymes could Avery, MacLeod, and McCarty have used to destroy proteins and RNAs? 2.Why might Werner syndrome increase the chances of getting cancer? 3.What protein may have been used to detect the telomeres?Gene mutations can be classified in two major ways:(1) hereditary or germline mutations that are inherited from a parent and are present throughout a person’s life in virtually every cell in the body.(2) acquired or somatic mutations that occur at some time during a person’s life and are present only in certain cells, not in every cell in the body.If there is no family history of a particular disease but a child has the disease then it may have arisen due to a(n) ________ mutation early during development. A) acquired B) inherited C) silent D) transitionSCIENCE, TECHNOLOGY, AND SOCIETY Imagine that you are a genetic counselor. What advice or suggestions might you give in the following situations? (a) A couple has come for advice because the woman had a sister who died of Tay-Sachs disease. (b) A young man and woman who are not related are engaged to be married. However, they have learned that the mans parents are first cousins, and they are worried about the possibility of increased risk of genetic defects in their own children. (c) A young womans paternal uncle (her fathers brother) has hemophilia A. Her father is free of the disease, and there has never been a case of hemophilia A in her mothers family. Should she be concerned about the possibility of hemophilia A in her own children? (d) A 20-year-old man is seeking counseling because his father was recently diagnosed with Huntingtons disease. (e) A 45-year-old woman has just been diagnosed with Huntingtons disease. She says she will not tell her college-age sons because of the burden it will place on them. Given that the woman, not her sons, is your client, do you have a duty to inform the sons? Explain your reasoning.
- Although it is well known that X-rays cause mutations, they are routinely used to diagnose medical problems, including potential tumors, broken bones, and dental cavities. Why is this done? What precautions need to be taken?Two genes associated with breast cancer, BRCA1 and BRCA2, were discovered in 1994 and 1995, respectively, and shortly thereafter, were patented by Myriad Genetics, a company based in Utah. Under the patents, testing for mutations in these genes could only be performed by Myriad, at costs from 300 to 3,000. Myriad also patented the process of analyzing the results of such tests, preventing anyone who obtains the sequence of their BRCA genes by other means (which itself would probably be patent infringement) from interpreting the information. The idea that genes can be patented has been a contentious issue from the beginning. Patents are not granted for products of nature, meaning that genes inside the body are not patentable, but biotech companies successfully argued that by removing a gene from the human body, purifying it, and then obtaining its DNA sequence, they created something not found in nature, and which is therefore a patentable invention. The U.S. Patent Office found the argument persuasive, but opponents argue that genes are parts of our bodies and can be identified but not invented. Biotech companies argue that without the protection offered by patents, they would have no incentive for research and development of diagnostic tests. In Europe, patents for BRCA1 and BRCA2 were revoked in 2004 because they did not meet the standards for a patent. After more than a decade of legal disputes, the patents were partially restored in 2008 on a very restricted basis. In the United States, a lawsuit, focused on the patents for the BRCA genes, was filed in May 2009. The suit challenges the basic idea that genes are patentable. In November 2009, the judge ruled that the lawsuit can proceed, and the case is moving forward. In March 2010, a federal court invalidated Myriad Genetics patent on these genes. In August 2011, the U.S. Court of Appeals reversed the lower courts decision and ruled that gene sequences isolated from cells are not a product of nature and are therefore patentable. The case went to the U.S. Supreme Court, which ordered the appeals court to reconsider the case. The Federal Appeals Court did not change its decision, and the case once again, went to the U.S. Supreme Court. A unanimous decision in June 2013 invalidated Myriads patents on the basis that isolating a gene from nature does not make it patentable. This is a landmark decision on gene patenting with widespread ramifications for the biotechnoloogy industry. Will this decision reduce the incentives for companies to invest in new diagnostic tests that would be used by cancer victims or those with serious genetic disorders?You are a genetic counselor, and your patient has asked to be tested to determine if she carries a gene that predisposes her to early-onset cancer. If your patient has this gene, there is a 50/50 chance that all of her siblings inherited the gene as well; there is also a 50/50 chance that it will be passed on to their offspring. Your patient is concerned about confidentiality and does not want anyone in her family to know she is being tested, including her identical twin sister. Your patient is tested and found to carry a mutant allele that gives her an 85% lifetime risk of developing breast cancer and a 60% lifetime risk of developing ovarian cancer. At the result-disclosure session, she once again reiterates that she does not want anyone in her family to know her test results. a. Knowing that a familial mutation is occurring in this family, what would be your next course of action in this case? b. Is it your duty to contact members of this family despite the request of your patient? Where do your obligations lie: with your patient or with the patients family? Would it be inappropriate to try to persuade the patient to share her results with her family members?
- (2) Design an experiment on how would molecular genetic tools, such as DNA microarrays, be used to study human diseases, such as skin tumor cell growth or migration? How could they be used to study melanin expression in nomal skin cells? Rubric for Class Portfolio #1: Student creates an experiment with experimental and negative control group on hoW DNA microarrays can used to address how it can be used to monitor skin tumor cell growth and/or migration, as well as melanin gene expression.What are the genetic disorders that we can done treatment by using gene therapy? Please answer at your own words, please.What do you mean by treatment of genetic disorders using gene therapy? Please answer at your own words, please.