The DNA Code
These four "chemical letters" (A, T, C, G) make up the rungs of the DNA ladder.
Nitrogen Bases
This square-shaped tool helps scientists predict the possible traits of offspring.
Punnett Square
This unique "barcode" is created in a lab to identify a suspect.
DNA Profile
This type of "invisible" evidence can be found in a single drop of blood or a hair root.
DNA Evidence
The twisted ladder shape of the DNA molecule is called this.
Double Helix
A trait that is "stronger" and can hide another trait is called this.
Dominant
This lab process uses electricity to separate DNA fragments into visible bands.
Electrophoresis
While humans share 99.9% of their DNA, investigators focus on the 0.1% that is ________.
Unique/Different
DNA is often called the "_________" for a living thing because it holds all the instructions for building you.
Blueprint
This term describes your physical appearance—the traits we can actually see.
Phenotype
This is the only group of people who share the exact same DNA.
Identical Twins
These "hidden" letter combinations (like BB or bb) are known as a person's ________.
Genotype
A specific section of DNA that codes for a single trait, like eye color.
Gene
If a suspect has two different alleles for a trait (like Bb), they are called this.
Heterozygous
To prove a suspect was at a crime scene, their DNA bands must be a _________ match.
100%Match
This is a trait that only shows up if a person has two copies of the "quiet" gene.
Recessive