Forensic DNA Biology Quiz

What is the goal of biological testing in forensic science?

• To improve our ability to identify an individual

• To determine the age of biological evidence

• To analyze the chemical composition of biological fluids

• To identify the geographical origin of a person

What is the main difference between forensic, historical, and archaeological cases in terms of timeframe?

• Forensic cases are contemporary or recent, while historical cases are from past conflicts

• Forensic cases involve mass disasters, while archaeological cases involve human trafficking

• Forensic cases are from the recent past, while archaeological cases are from 100's to 1000's of years ago

• Forensic cases are unsolved criminal investigations, while historical cases are from the Romanov era

What is the significance of secretor status in forensic serology?

• It is a genetic marker system for identifying individuals

• It determines the gender of an individual

• It indicates the level of education of an individual

• It predicts the height of an individual

What is the main advantage of using isoenzyme systems in forensic cases?

• They can be used to determine the age of biological evidence

• They are more cost-effective than other methods

• They are easier to analyze than DNA profiles

• They provide additional discrimination power

What is the purpose of combining ABO and isoenzyme types in forensic casework?

• To determine the time of death in a forensic investigation

• To identify the geographical location of a crime scene

• To estimate the random match probability in a given population

• To analyze the psychological profile of a suspect

What is the outcome of an exclusion in forensic analysis?

• It indicates the presence of multiple contributors to a sample

• It provides a statistical estimate of the likelihood of a match

• It confirms the guilt of a suspect in a criminal case

• It unambiguously eliminates a person as a contributor to a sample

What is the main limitation of blood and isoenzyme system typing in forensic cases?

• They are not reliable in identifying biological fluids

• They are only applicable to contemporary cases

• They have limited discrimination power compared to DNA profiling

• They cannot be used to exclude potential contributors

What was the key advantage of isoenzyme systems in forensic cases?

• They were easier to analyze than DNA profiles

• They could determine the gender of an individual

• They were more cost-effective than other methods

• They provided additional discrimination power to ABO typing

In the George Rodriguez case, why was Yanez initially excluded as a potential contributor to the evidence?

• He was a non-secretor with type AB blood

• He was a secretor with type B blood

• He was a non-secretor with type O blood

• He was a secretor with type A blood

What was the outcome of the more discriminating mtDNA analyses in the George Rodriguez case?

• Mr. Rodriguez was sentenced to life in prison

• Mr. Rodriguez was excluded and Mr. Yanez was included as a potential contributor

• Mr. Rodriguez was confirmed as the sole contributor to the evidence

• Mr. Rodriguez and Mr. Beltran were both excluded as contributors