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.9c

14장, 문제 C.9c

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. With regard to the results of genetic testing for BRCA1 and BRCA2 mutations, what is meant by a 'positive result'?

검증된 단계별 안내

Understand that BRCA1 and BRCA2 are genes where certain mutations can significantly increase the risk of developing breast and other cancers.

Recognize that genetic testing for BRCA mutations involves analyzing a person's DNA to identify specific changes or variants in these genes.

A 'positive result' in this context means that the genetic test has detected a mutation in either the BRCA1 or BRCA2 gene that is known to be associated with a higher risk of cancer.

This positive result indicates that the individual carries a hereditary mutation that may increase their likelihood of developing breast cancer or other related cancers compared to someone without the mutation.

It is important to note that a positive result does not guarantee cancer development but signifies an increased risk, which can guide medical management and preventive strategies.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

BRCA1 and BRCA2 Genes

BRCA1 and BRCA2 are human genes that produce proteins responsible for repairing damaged DNA. Mutations in these genes can impair DNA repair, increasing the risk of developing breast and ovarian cancers. Understanding these genes is essential to grasp why their mutations are significant in cancer risk.

Genetic Testing and Mutation Detection

Genetic testing analyzes DNA to identify mutations in specific genes like BRCA1 and BRCA2. A 'positive result' means a harmful mutation was found, indicating a higher risk for certain cancers. This testing helps guide prevention and treatment decisions.

Implications of a Positive BRCA Test Result

A positive BRCA test result indicates the presence of a mutation that increases cancer risk but does not guarantee cancer development. It informs individuals about their elevated risk, enabling proactive measures such as increased screening, lifestyle changes, or preventive surgeries.

관련 실천

교과서 질문

Discuss the advantages (and possible disadvantages) of the different approaches to reverse genetics.

611

views

교과서 질문

The inheritance of certain mutations of BRCA1 can make it much more likely that a woman will develop breast or ovarian cancer in her lifetime. Can you say with certainty that a woman inheriting a mutation of BRCA1 will definitely develop breast or ovarian cancer in her lifetime? Why or why not?

452

views

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

views

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

views

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

교과서 질문

The inheritance of certain mutations of BRCA1 can make it much more likely that a woman will develop breast or ovarian cancer in her lifetime. In addition to inheriting a BRCA1 mutation, what else must happen for a woman to develop breast or ovarian cancer?

387

views