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Quiz on Human Genetic Variability and Consequences

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Quiz on Human Genetic Variability and Consequences

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Questions and Answers

Which type of genetic variation refers to large-scale changes in the human genome, such as copy number variations and translocations?

SNPs and microsatellites

Pathogenic mutations

Large scale germ-line genetic variation (correct)

Small scale germ-line genetic variation

What is the purpose of sexual reproduction in humans?

To ensure identical DNA bases

To adapt to new environmental stresses

To prevent genetic variations

To create genetic differences between individuals (correct)

When aligning two human genomes, how similar are they at the DNA level?

Identical at 90% of DNA bases

Identical at 100% of DNA bases

Identical at 50% of DNA bases

Identical at 99.9% of DNA bases (correct)

Which type of genetic mutation results in the introduction of a stop codon?

Nonsense/stop Signup and view all the answers

What is the main characteristic of cancer cells that allows for rapid evolution?

Genomic instability Signup and view all the answers

What is the purpose of genetic characterization in cancer research?

To understand the nature of genetic variation in malignant cells Signup and view all the answers

Which type of genetic variation involves the exchange of DNA between two different chromosomes during meiosis?

Translocations/transversions Signup and view all the answers

What is the incidence of trisomy 21 (Down syndrome) in newborns?

Approximately 1:1000 Signup and view all the answers

Which type of genetic variation involves the deletion or duplication of relatively large sections of DNA (>1000 base-pairs)?

Copy number variants Signup and view all the answers

What is the incidence of microsatellites in our genomes?

Common Signup and view all the answers