National Cancer Institute
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Science Behind the News Understanding Gene Testing
 
Abstract graphic of understanding gene testing

Understanding Gene Testing

01 Introduction

02 Genes in the News

03 DNA

04 Chemical Bases in DNA

05 DNA Molecules

06 Gene subunits

07 DNA->RNA->Protein

08 Different Genes --- Different Functions

09 Gene Mutaions and Disease

10 Gene Mutations

11 Altered DNA-> Altered Protein

12 Hereditary Mutations

13 Acquired Mutations

14 Human Chromosomes

15 Alleles

16 Altered Dominant Genes

17 Altered Recessive Genes

18 Disease Inheritance Is Complex

19 Gene Tests --- Three Common Methods

20 Genetic Tests Serve Many Purposes

21 Human Genome Project

22 Identifying DNA Bases

23 Searching Disease Families

24 Gene Markers

25 Probes for Gene Markers

26 Predictive Gene Tests Available Now or Soon

27 Many Mutations Lead to Cancer

28 Most Cancer Is Not Inherited

29 Genetic Test Find Mutations, NOT Disease

30 Benefits of Gene Testing

31 Limitations of Gene Testing

32 Major Limitation of Gene Testing

33 Psychological Consequences

34 Who Should Know?

35 Confidentiality Concerns

36 Difficult Decision

37 Personal Decision

38 Importance of Counselors

39 Candidates for Testing

40 Technical Concerns

 
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