Passing on of traits from parent to offspring.
Versions of a gene
Ex: gene - hair color; alleles - brown, blonde, red etc.
Having 2 of the same alleles for a gene
Ex: BB or bb
Having 2 different alleles for a gene
Trait that is expressed with only 1 copy of the allele present. Represented with capital letter.
Trait that is expressed only when 2 copies of the allele is present. It is masked by dominant allele when in heterozygous combination. Represented by lower case letter.
The alleles present in an organism; genetic makeup. Represented by letters. Determines phenotype.
The physical appearance or detectable traits of an organism which is determined by genotype.
A pair of chromosomes that carry the same types of genes.
Chart that predicts the results of a genetic cross.
Cross showing 1 trait
Ex: flower color
Law of Independent Assortment
States that homologous chromosomes separate independently of one another during meiosis allowing for different possible combinations in the gametes.
Inheritance pattern where neither allele is dominant and an intermediate phenotype is shown with heterozygous genotype.
Inheritance pattern where both alleles are dominant and both are shown in the phenotype.
Trait that is controlled by 3 or more alleles.
Ex: blood type has 3 alleles - A, B and O.
Sex Linked Traits
Traits that are on the sex chromosomes - X or Y. Males are more likely to display sex linked traits.
Chart that shows how a trait is passed through multiple generations.