In certain cases, genetic testing can identify mutant alleles that greatly increase a person's chance of developing a disease such as breast cancer or colon cancer. Between 50 and 70% of people with these particular mutations will develop cancer, but the rest will not. Imagine you are either a 30-year-old woman with a family history of breast cancer or a 30-year-old man with a family history of colon cancer (choose one). Each person can undergo genetic testing to identify a mutation that greatly increases susceptibility to the disease. Putting yourself in the place of the person you have chosen, provide answers to the following questions.
If you were the spouse or partner of the person you have selected, would you encourage or would you discourage the person from having the genetic test? Why?
Table of contents
- 1. Introduction to Genetics51m
- 2. Mendel's Laws of Inheritance3h 37m
- 3. Extensions to Mendelian Inheritance2h 41m
- 4. Genetic Mapping and Linkage2h 28m
- 5. Genetics of Bacteria and Viruses1h 21m
- 6. Chromosomal Variation1h 48m
- 7. DNA and Chromosome Structure56m
- 8. DNA Replication1h 10m
- 9. Mitosis and Meiosis1h 34m
- 10. Transcription1h 0m
- 11. Translation58m
- 12. Gene Regulation in Prokaryotes1h 19m
- 13. Gene Regulation in Eukaryotes44m
- 14. Genetic Control of Development44m
- 15. Genomes and Genomics1h 50m
- 16. Transposable Elements47m
- 17. Mutation, Repair, and Recombination1h 6m
- 18. Molecular Genetic Tools19m
- 19. Cancer Genetics29m
- 20. Quantitative Genetics1h 26m
- 21. Population Genetics50m
- 22. Evolutionary Genetics29m
1. Introduction to Genetics
Modern Genetics
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
True or False:
Single nucleotide polymorphisms are common in the human population.
A
True
B
False

1
Understand the term 'Single Nucleotide Polymorphisms (SNPs)': SNPs are variations at a single position in a DNA sequence among individuals.
Recognize the prevalence of SNPs: SNPs are the most common type of genetic variation among people.
Consider the frequency of SNPs: In the human genome, SNPs occur approximately once in every 300 nucleotides, which means there are roughly 10 million SNPs in the human genome.
Evaluate the impact of SNPs: While many SNPs have no effect on health or development, some can influence how humans develop diseases and respond to pathogens, chemicals, drugs, vaccines, and other agents.
Conclude based on the information: Given their common occurrence and significant presence in the human genome, the statement that SNPs are common in the human population is true.
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