| A | B |
| Replication | The process in which DNA is copied |
| Double Helix | The structure of DNA, twisted ladder shape |
| Nucleotide | A building block of DNA-consists of sugar, phosphate, and nitrogen base |
| Allele | A pair of hereditary factors that make up a gene (different forms of a gene) |
| DNA | Double helix structure, genetic material that carries information about an organism |
| mRNA | The RNA that carries the code from the DNA to the ribosomes |
| tRNA | The RNA that gets amino acids from the cytoplasm and brings them to the ribosomes, helps uncode the mRNA |
| Transcription | The process where an RNA copy is made from a DNA pattern |
| Diffusion | When molecules move from an area of high concentration to an area of lower concentration |
| Trait | The characteristics of an organism that pass down to offspring through genes (DNA) |
| Genetics | The science of biological inheritance |
| Recessive | A hereditary factor that is hidden by a dominant allele |
| Genotype | The actual allele you carry in your genes |
| Chromosome | genetic material that carries genes in "X" shape |
| Gene | A segment of chromosome that produces a particular trait |
| Dominant | A hereditary factor that "takes over" the gene determining the trait and may hide or mask a recessive allele |
| Probability | The likelihood of something that happening-in this case the likelihood of a particular trait being passed down to offspring |
| Phenotype | The physical traits that you can actually see in an individual |
| Ribosome | Makes proteins |
| Nuclear Membrane | Decides what can and can't go into the nucleus |
| Nucleus | The main control of the cell, "brain" of the cell |
| Cell membrane | Controls what can and can't go into the cell |
| Meiosis | Get double chromosomes |
| Mitosis | Is the process in which cells split |