| A | B |
|---|
| punnet square | diagram used by biologists to predict the outcome of a genetic cross |
| heterozygous | refers to an individual with two Different alleles for a trait |
| co-dominance | condition in which both alleles for a gene are expressed when present |
| homozygous | refers to an individual with two alleles that are the same for a trait |
| allele | an alternative form of a gene |
| incomplete dominance | condition in which a trait in an individual is in the middle of the phenotype of its two parents |
| F-2 generation | the offspring from crosses among individuals of the F-1 generation |
| P-1 Generation | the first two individuals that made in a genetic cross |
| polygenic trait | characteristic of an organism that is influenced by several genes |
| Dominant | genetic trait that is expressed when it's allele is homozygous or heterozygous |
| recessive | genetic trait that is not expressed when the contrasting form of the trait is present |
| test cross | a genetic cross of an individual whose phenotype is dominant, genotype is unknown |
| genetics | study of heredity |
| multiple alleles | the existence of more than two alleles |
| true breeding | displaying only one form of a particular trait in offspring |
| monohybrid cross | cross involving one pair of contrasting traits |
| F-1 generation | the first offspring from a cross of two varieties in the P (parental) generation |
| heredity | transmission of genetic traits from parent to offspring |
| probability | the likelihood that a specific event will occur |
| phenotype | observable physical characteristics of an organism |
| genotype | the genetic makeup of an organism as indicated by its set of alleles |
| Gene | a molecular unit of heredity, name given to some stretches of DNA and RNA |
