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Genetics
Basic Freshman HS Genetics
| Term | Definition |
|---|---|
| heredity | the passing of traits to offspring |
| recessive | trait that is expressed only when a dominant allele is not present |
| dominant | trait that is expressed when even one allele is present |
| homozygous | two identical alleles (EX: BB) |
| heterozygous | two different alleles (EX: Bb) |
| genotype | the genetic code for a trait (EX: Bb) |
| phenotype | the physical appearance of a trait (EX: brown eyes) |
| sex-linked trait | a trait that is carried on an X chromosome (one of the sex chromosomes) |