Biological Samples Vocab

Which method is used to amplify tiny amounts of DNA evidence?

• Electrophoresis

• Polymerase Chain Reaction (PCR)

• Short Tandem Repeats (STRs)

• Electropherogram

What are homologous chromosomes?

• A long molecule composed of similar repeating units

• Those with similar size, shape, and genes coding for the same traits

• A pattern of DNA fragments obtained by analyzing noncoding DNA

• A portion of a gene that is not expressed

Tags

NGSS.HS-LS3-1

Short Tandem Repeats (STRs) are found in:

• Noncoding regions of DNA

• Expressed genes

• The cytoplasm of the cell

• The protein structure of chromosomes

What is a polymer?

• A database used for DNA profiling

• A repeating sequence of DNA bases

• A long molecule composed of similar repeating units

• A portion of a gene that codes for proteins

Which term describes a type of genetic variation where one nucleotide is substituted for another?

• STR markers

• Single Nucleotide Polymorphisms (SNPs)

• Electropherogram

• Human Genome

Tags

NGSS.HS-LS3-2

Match the following

• Gene

• The portion of a gene that is expressed.

• DNA

• The genetic material of all living things.

• Exon

• The portion of a gene that is not expressed.

• Intron

• The basic unit of heredity; a sequence of DNA that codes for proteins or regulation of proteins.

• Chromosome

• A nuclear cell structure that contains DNA.

Tags

NGSS.HS-LS3-2

Match the following

• Electropherogram

• A chart used to determine the DNA sequence of genotypes.

• STR Markers

• A method of separating molecules, such as DNA, according to size.

• Electrophoresis

• A pattern of DNA fragments obtained by analyzing a person’s unique sequence of noncoding DNA.

• DNA Profile

• A gene or DNA sequence with a known location on a chromosome.

• Short Tandem Repeats (STRs)

• A sequence of repeating bases in noncoding regions of DNA used in DNA profiling.

Match the following

• Single Nucleotide Polymorphisms (SNPs)

• A long molecule composed of similar repeating units.

• Polymer

• The Combined DNA Index System, a database for storing DNA profiles.

• Polymerase Chain Reaction (PCR)

• A method of amplifying (duplicating) tiny amounts of DNA evidence for use in investigations.

• CODIS

• A type of genetic variation where one nucleotide is substituted for another.

• Amplification

• A method of artificially increasing copies of a particular DNA restriction fragment.

_________________ is a database used to store DNA profiles for forensic investigations.

The process of ________ is used to duplicate small amounts of DNA evidence for further analysis.