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Genetics Vocab
Term | Definition |
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Homozygous | the genotype letters are identical: RR or rr |
Heterozygous | the genotype letters are different sizes: Rr |
Allele | one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome. |
Genotype | the genetic constitution of an individual organism. |
Phenotype | the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. |
Codominance | a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different the dominant one will be expressed, while the other one is masked |
Incomplete Dominance | refers to a genetic situation in which one allele does not completely dominate another allele, and therefore results in a new phenotype. |
Law of Independent assortment | the principle, originated by Gregor Mendel, stating that when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together. |
Law of Segregation | the principle, originated by Gregor Mendel, stating that during the production of gametes the two copies of each hereditary factor segregate so that offspring acquire one factor from each parent. |
Hybrid | n organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species; "a mule is a cross between a horse and a donkey" |