| A | B |
|---|
| AA | Homozygous dominant |
| aa | Homozygous recessive |
| Aa | Heterozygous |
| Genotype | the allele combination |
| Phenotype | the physical expression of a genotype |
| Allele | Different versions of a gene |
| Gene | Small sequence of DNA that codes for a protein |
| Genetics | The study of heridity |
| Sperm or egg | Gamete |
| Body cells (ex brain cell) | Somatic Cell |
| Diploid | 2 sets of chromosomes |
| Haploid | 1 set of chromosomes |
| Dominant | the allele that masks another allele |
| Recessive | the allele that IS MASKED by another alllele |
| Autosome | Chromosome that is not a sex chromosome |
| X and Y chromosomes | Sex Chromosomes |
