Exam 7: DNA Structure and Replication

You examine a gel containing the DNA profile of a mother and her biological child.Only 10 STRs were used to obtain the profile.How many bands on the gel should be identical in size between mother and child?

Which of the following would give the greatest chance of identifying a person using a DNA profile?

A parent gives half their DNA to their child.This means that when 10 STRs are studied,at least _____ bands will be identical on a gel comparing one parent and child.

Which type of crime scene evidence is most reliable?

One commonly used STR is called "TH01," found on chromosome 11.Let's say we have STR information on TH01 from DNA profiles of both of Marcus's parents.Which is the most likely description of TH01 differences between Marcus's parents?

The original strand of DNA used for DNA replication is known as the

An individual's STR may vary from the same STR of another individual by

DNA can generally be extracted from

You are investigating a crime.The DNA profile database has no perfect matches to the DNA collected at the crime scene.However,one profile in the database has at least one band in common with the crime scene DNA at every STR site.Which statement is the most likely conclusion can you draw?

What is gel electrophoresis?

What is now commonly used by forensic scientists as evidence in criminal cases to free people wrongly convicted of crimes?

Some problems with use of DNA analysis for forensic evidence may occur because of

DNA analysis is used in

Where are chromosomes located in eukaryotic cells?

Which is the best description of how nucleotides are attached to make DNA? Nucleotides are attached to each other ________.

Which phrase represents genetic variation between individuals?

DNA replication is said to be semiconservative because a newly replicated,double-stranded DNA molecules consists of _____.

Which of the following statements is FALSE?

STR DNA analysis can be used for all of the following applications EXCEPT

A DNA profile using 15 STRs may show as many as ____ bands on a gel.