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FS 2 - DNA

DNA review

What does the abbreviation DNA represent? deoxyribonucleic acid
What is the function of exons? They express traits.
What is the abbreviation CODIS represent? Combined DNA index system
How is CODIS used? It is used to share DNA information from criminals and crime scenes.
Where can nuclear DNA be found in a human cell? inside the nucleus of most cells
Which human cell does NOT contain DNA? red blood cells
What is mtDNA? DNA found inside the mitochondria.
What term describes the units that make up DNA? nucleotides
List the 3 parts of a nucleotide phosphate group, deoxyribose sugar, nitrogenous base
How many chromosomes are found inside a normal human cell? 46 total chromosomes
How many pairs of chromosomes are found inside a normal human cell? 23 pairs
What is the function of a gene? controls a specific trait
What are the 4 nitrogen bases? A, T, C, G
An average gene is how many base pairs long? 3000
Exons make up what percent of DNA? 5 percent
Introns make up what percent of DNA? 95 percent
What is the function of a restriction enzyme? It cuts DNA at a certain base pattern.
What is a restriction fragment? A piece of DNA that has been cut by a restriction enzyme.
Which size of a restriction fragment will travel the farthest in gel electrophoresis? the shorter fragments travel the farthest
Which size of a restriction fragment will travel the shortest distance in gel electrophoresis? the longer fragments travel the shortest distance
What does the term STR represent? short tandem repeats
How many core STR's are recognized by the FBI? 13 core STR
What is a loci for an STR? the place where it is located on a chromosome
An STR has a number of 12. What does this mean? the pattern repeated itself 12 times.
Created by: lb goodlock