Chapter 7: DNA Profiling

Multiple Choice

Why is DNA evidence considered more powerful than other types of evidence in forensic investigations?

• Because it can individually identify a suspect

• Because it is easier to collect

• Because it is always visible at a crime scene

• Because it does not require laboratory analysis

Multiple Choice

Which of the following statements about DNA profiling is correct?

• DNA profiling can identify a person based on their genetic code.

• Identical twins do not share the same DNA.

• DNA is not inherited from parents.

• DNA profiling cannot determine kinship.

Multiple Select

Which of the following are limiting factors in the use of DNA profiling?

• Cost

• Backlogs

• Degraded DNA

• Immediate results

Multiple Choice

Which of the following statements about DNA is correct?

• All human cells contain DNA.

• Most DNA is coding.

• The Human Genome Project is unrelated to DNA.

• DNA is not found in the human genome.

Multiple Select

Which of the following are true about the human genome?

• Each gene averages 3,000 base pairs.

• All humans have the same genes arranged in the same order.

• Sequences are 99.9 percent the same.

• All genes are different in every human.

Multiple Choice

Which of the following statements about STR profiles is correct?

• An individual's DNA STR profile is unique.

• STR profiles are the same for everyone.

• STR profiles do not use commercial kits.

• STR allele frequencies are not important.

Multiple Choice

Which of the following is NOT a common source of DNA evidence collected at a crime scene?

• White blood cells

• Skin cells

• Plastic fibers

• Saliva

Multiple Select

Which of the following are functions of CODIS in forensic investigations?

• Links two or more crimes together

• Provides new leads for investigators

• Identifies the gender of suspects

• Stores evidence DNA of unknown identity

Multiple Select

Which types of DNA profiling analyses are used to identify individuals in forensic investigations?

• STR analysis

• mtDNA analysis

• Familial searching

• Blood typing

Multiple Choice

Which of the following best explains how advances in DNA analysis have contributed to faster and more reliable results in personal identification?

• By using modeling and machine learning algorithms to create genetic structures and converting SNP loci to bar codes for comparison

• By increasing the number of DNA samples collected

• By focusing only on mitochondrial DNA analysis

• By eliminating the use of STR markers