Ch. 7 DNA Profiling

Front

What is familial searching in the context of DNA profiling?

Back

Familial searching is the use of CODIS and state databases to search for relatives of unknown persons or offenders.

Front

What is the complementary DNA strand to the sequence CAGGATCGA?

Back

The complementary strand is GTCCTAGCT.

Front

What is an exon in genetics?

Back

An exon is the portion of a gene that is expressed.

Front

What is the method used to separate DNA molecules according to size?

Back

Electrophoresis is the method used to separate molecules, such as DNA, according to size.

Front

How many STR regions are analyzed for CODIS in the U.S.?

Back

In the U.S., 13 STR regions are analyzed for CODIS.

Front

What does STR stand for in DNA profiling?

Back

STR stands for Short Tandem Repeat.

Front

What is the purpose of DNA profiling?

Back

The purpose of DNA profiling is to identify individuals based on their unique DNA characteristics.

Front

What is the role of PCR in DNA profiling?

Back

PCR (Polymerase Chain Reaction) is used to amplify small amounts of DNA for analysis.

Front

What is the significance of the 13 STR regions in forensic science?

Back

The 13 STR regions provide a standard set of markers for comparison in DNA profiling, increasing the accuracy of identification.

Front

What is the difference between an exon and an intron?

Back

An exon is a coding region of a gene that is expressed, while an intron is a non-coding region that is not expressed.