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FS 2 - DNA
DNA review
Term | Definition |
---|---|
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 |
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 |