click below
click below
Normal Size Small Size show me how
7th Unit 2b
Genetics: Heredity
| Term | Definition |
|---|---|
| Heredity | The passing of traits from parents to their offspring. |
| Genetics | The study of heredity. |
| Allele | An alternative form of a gene. |
| Punnett Square | A diagram used to predict the outcome of a genetic cross. |
| Gene | A segment of DNA that controls a trait. |
| Dominant allele | The allele that is expressed in an organism. |
| Recessive allele | The allele that is hidden by the dominant gene or not expressed. |
| Genotype | An organism's combination of genes for a trait. |
| Phenotype | An organism's physical appearance or characteristics as a result of its combination of genes. |
| Law of Independent Assortment | The pairs of genes separate independently of one another. |
| Law of Segregation | The pair of alleles for a trait will separate when gametes are formed; so that each gamete will have a random allele. |
| Homozygous | An individual that has two alleles that are the same for a particular trait. |
| Heterozygous | An individual that has two alleles that are different for a particular trait. |