Jonah | Biology - Topic K

Pedigree

display showing how a trait is passed through multiple generations of related individuals

Multiple Alleles

inheritance pattern which there are more than 2 possibilities for a trait

Codominance

inheritance pattern in which 2 forms of a trait both show fully in individuals with a heterozygous geneotype

Polygenic Traits

inheritance pattern in which there are many genes controlling a trait

Allele

different versions of a trait

Phenotype

physical description of a trait in an organism

Genotype

genes that determine a trait shown as letters

Heterozygous

form of a trait determined by 2 different alleles

Homozygous

form of a trait determined by 2 of the same alleles

Dominant Trait

allele that determines trait if present

Recessive Trait

allele that can be hidden by dominant allele, only appears if dominant allele is not present

Simple (Mendelian) Inheritance

inheritance pattern in which there is a dominant form of a trait that covers a recessive form when both are present

Punnett Square

method of determining the genotypes & phenotypes of all possible offspring given the genotypes/phenotypes of their parents

Incomplete Dominance

inheritance pattern in which 2 forms of a trait blend in individuals with a heterozygous genotype

Sex-Linked Traits

inheritance pattern in which genes are only found on the x chromosome allowing for 2 allele possibilities in females and in males