click below
click below
Normal Size Small Size show me how
Gentics
Term | Definition |
---|---|
Heredity | The passing on of physical or mental characteristics genetically from one generation to another |
Genetics | The study of heredity and the variation of inherited characteristics |
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 |
Gene | A unit of heredity (a distinct sequence of nucleotides) that is transferred from a parent to offspring and is held to determine some characteristic of the offspring |
Trait | A feature of an organism |
Dominant | A trait that will appear in the offspring if one of the parents contributes it |
Recessive | A gene that is trumped by a dominant gene; a recessive allele has to team up with another recessive allele in order to show up |
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 |
Homozygous | Identical pairs of genes for any given pair of hereditary characteristics |
Heterozygous | Dissimilar pairs of genes for any hereditary characteristic |
Monohybrid Cross | A genetic cross between parents that differ in the alleles they possess for one particular gene, one parent having two dominant alleles and the other two recessive |