Bio 11.2-11.3 Genetics vocabulary

when an organism has two copies of the same allele for a gene

• homozygous

• heterozygous

• multiple alleles

• polygenic traits

• independent assortment

when an organism has two different alleles for a gene

• homozygous

• heterozygous

• multiple alleles

• polygenic traits

• independent assortment

when a gene has more than two alleles for a trait

• homozygous

• heterozygous

• multiple alleles

• polygenic traits

• independent assortment

traits controlled by two or more genes

• homozygous

• heterozygous

• multiple alleles

• polygenic traits

• independent assortment

genes for different traits segregate randomly during gamete formation

• homozygous

• heterozygous

• multiple alleles

• polygenic traits

• independent assortment

physical traits, how an organism looks

• phenotype

• genotype

• incomplete dominance

• codominance

genetic traits, what DNA code an organism has

• phenotype

• genotype

• incomplete dominance

• codominance

heterozygous phenotype shows somewhere between the two homozygous phenotypes

• phenotype

• genotype

• incomplete dominance

• codominance

phenotypes from both alleles show up simultaneously in a mixture

• phenotype

• genotype

• incomplete dominance

• codominance