| A | B |
|---|
| alleles | the different forms a gene may have for a trait |
| heredity | the passing of traits from parents to offspring. |
| gnentics | the study of how traits are inherited through the actions of alleles |
| Gregor Mendel | the father of genetics |
| Dominant | the allele that covers up or hides another allele |
| recessive | the allele that is hidden by the dominant allele |
| punnett square | a handy tool used to predict results in Mendelian genetics |
| genotype | the genetic makeup of an organism |
| homozygous | when both alleles are the same for a trait |
| heterozygous | an organism that has two different alleles for a trait |
| phenotype | the physical trait that shows as a result of a particular genotype |
| Incomplete dominance | the production of a phenotype that is intermediate to those of the parents. |
| polygenic inheritance | when a group of gene pairs act together to produce a single trait. |
| sex linked gene | gene located on the x chromosome |
| genetic engineering | technology for changing a gene |
| genome | all the genes in a species |
| multiple alleles | more than two forms of an allele code for a trait. |
| pedigree | shows the pattern of gene inheritance in a family |
| carrier | a person who has one defective allele but does not have the disease |
| sickle cell anemia | recessive genetic disorder |
