| A | B |
| Name 2 types of alleles | Dominant and recessive |
| alleles | The different forms of a gene |
| How is dominant allele represented | By a capital letter |
| homzygous | Having two identical alleles for a genotype |
| heterozygous | Having two different alleles for a genotype |
| gene | A segment of chromosomes that code for a specific trait |
| genotype | Combination of alleles |
| phenotype | Physical appearance or visible traits |
| Pure breed is an example of what | Homozygous --Example TT or tt |
| dominant | Allele that shows up in the physical traits of an organism. It is represented by a capital letter. |
| recessive | An allele that is masked or covered up when a dominant allele is present. |
| What is the purpose of the punnett squares? | A chart that help to determine the probability of the offspring that has certain traits. |
| How are sex chromosomes in males represented? | XY |
| How are sex chromosomes in females represented? | XX |
| How is a recessive allele represented | by a small letter |
| hybrid | Heterozygous --Example Tt or Dd |