| A | B | 
|---|
| heredity | the passing of traits from parent to offspring | 
| allele | the different forms a gene may have for a trait | 
| sexual reproduction | when male and female cells combine to form a new cell | 
| dominant | form of a trait that appears to mask  another form of the same trait | 
| recessive | form of a trait that seems to disappear in a population, but can reappear | 
| Punnett square | chart used to predict results in Mendelian genetics | 
| genotype | genetic makeup of an organism | 
| homozygous | organism with two identical alleles for a trait | 
| hetrozygous | organism with two different alleles for a trait | 
| phenotype | observable characteristic; physical trait that shows as a result of a particular genotype | 
| incomplete dominance | production of a phenotype that is intermediate to those of the two homozygous parents | 
| Gregor Mendel | father of genetics | 
| precentage | ratio that states the number of times an outcome is likely out of a possible 100 times | 
| gene | basic unit of heredity, made of a segment of DNA on a chromosome | 
| ratio | A comparison between two quantitites | 
| hybrid | another name for a heterozygous organism | 
| probability | chance that a specific outcome will occur out of total number of outcomes | 
| purebred | organism that always produces the same traits in its offspring |