| A | B |
|---|
| probability | A number that describes how likely it is that an event will occur |
| Punnett Square | A chart that shows all the possible combinations of alleles that can result from a genetic cross |
| phenotype | Is an organism's physical appearance, or visible traits |
| genotype | Is an organism's genetic makeup, or allele combination |
| homozygous | An organism that has two identical alleles for a trait |
| heterozygous | An organism that has two different alleles for a trait |
| codominance | The alleles are neither dominant or recessive. As a result, coth alleles are expressed in the offspring. |
| meiosis | The process by which the number of chromosomes is reduced by half to form sex cells-sperm and eggs. |
| messenger RNA | Copies the coded message from the DNA in the cucleus, and carries the message to the ribosome in the cytoplasm. |
| transfer RNA | Carries amino acids to the ribosome and adds them to the growing protein. |
| mutation | Any change in a gene or chromosome. |
| Uracil | Not Thymine--pairs with Adenine in Protein Synthesis |
