Ch. 14 - Analysis of Gene Function via Forward Genetics and Reverse Genetics

Sanders - Genetic Analysis: An Integrated Approach 3rd Edition

Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172당신이 사용하는 게 아니라요?교과서 변경

Sanders 3rd Edition

Ch. 14 - Analysis of Gene Function via Forward Genetics and Reverse Genetics

문제 C.9d

14장, 문제 C.9d

Go to the website http://www.cancer.gov and select 'Cancer Types' on the top menu bar. Scroll down to 'Breast Cancer' and click. Select 'Cases & Prevention' from the options. Click 'More information' and select 'BRCA Mutations: Cancer Risk and Genetic Testing'. Use the information on this page to answer the following questions. Are there measures a woman with a positive result can take to lessen her chances of developing cancer or to catch a cancer early in its development?

검증된 단계별 안내

This question is about understanding genetic risk factors and preventive measures related to BRCA mutations, which are linked to breast cancer risk.

First, recognize that BRCA1 and BRCA2 are genes where certain mutations can significantly increase the risk of breast and ovarian cancers.

Next, explore the information on the specified website section about BRCA mutations, focusing on recommended strategies for women who test positive for these mutations.

Identify the preventive measures mentioned, which may include increased surveillance (such as more frequent mammograms or MRI scans), lifestyle changes, chemoprevention (using medications to reduce risk), and prophylactic surgeries (such as mastectomy or oophorectomy) to reduce cancer risk.

Finally, understand that early detection strategies aim to catch cancer at an early, more treatable stage, while preventive surgeries and medications aim to lower the overall risk of developing cancer.

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주요 개념

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BRCA Gene Mutations and Cancer Risk

BRCA1 and BRCA2 are genes that produce proteins responsible for repairing DNA damage. Mutations in these genes can significantly increase a woman's risk of developing breast and ovarian cancers. Understanding these mutations helps assess individual cancer risk and guides decisions about prevention and screening.

Preventive Measures for High-Risk Individuals

Women with positive BRCA mutations can take preventive actions such as increased surveillance, chemoprevention, or risk-reducing surgeries like mastectomy or oophorectomy. These measures aim to lower the chance of cancer development or detect it early when treatment is more effective.

Early Detection and Screening Strategies

Early detection involves regular screening methods like mammograms, MRI, and clinical breast exams, especially for high-risk women. These strategies help identify cancer at an early stage, improving treatment outcomes and survival rates.

관련 실천

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You have identified a gene encoding the protein involved in the rate-limiting step in vitamin E biosynthesis. How would you create a transgenic plant producing large quantities of vitamin E in its seeds?

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What kind of information will be made available by The Cancer Genome Atlas (TCGA)? What sort of role do you think TCGA information will play in cancer diagnosis and cancer treatment in the future?

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교과서 질문

Go to the website http://www.cancer.gov and select 'Cancer Types' on the top menu bar. Scroll down to 'Breast Cancer' and click. Select 'Cases & Prevention' from the options. Click 'More information' and select 'BRCA Mutations: Cancer Risk and Genetic Testing'. Use the information on this page to answer the following questions. What are the approximate percentage increases in risk of having breast cancer and of having ovarian cancer for women inheriting harmful mutations of BRCA1 and BRCA2 compared with the risks in the general population?

467

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교과서 질문

Discuss the advantages (and possible disadvantages) of the different mutagens in the following table:

483

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교과서 질문

Go to the website http://www.cancer.gov and select 'Cancer Types' on the top menu bar. Scroll down to 'Breast Cancer' and click. Select 'Cases & Prevention' from the options. Click 'More information' and select 'BRCA Mutations: Cancer Risk and Genetic Testing'. Use the information on this page to answer the following questions. As a special project, instead of selecting 'Breast Cancer' from the list of types of cancer, select another cancer you would like to know more about and produce a short summary of what you find.

488

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교과서 질문

Go to the website http://www.cancer.gov and select 'Cancer Types' on the top menu bar. Scroll down to 'Breast Cancer' and click. Select 'Cases & Prevention' from the options. Click 'More information' and select 'BRCA Mutations: Cancer Risk and Genetic Testing'. Use the information on this page to answer the following questions. What features of family history increase the likelihood that a woman will have a harmful mutation of BRCA1 or BRCA2?

428

views