Complex Inheritance Patterns

Genes are located on chromosomes and the behavior of chromosomes during meiosis accounts for inheritance patterns

Where the Heterozygous phenotype is somewhere between the two homozygous phenotypes Neither allele is completely dominant or recessive The colors would mix on a flower for example

Both traits in the heterozygous are fully and separately expressed Red and white flowers make red and white speckled flowers

Both codominant and multiple alleles It is codominant because AB it is blood type A and B It is multiple alleles because it has a, b, and i

Having more than 2 versions for one gene Ex Fur color in rabbits

A trait produced by two or more genes Usually shows a range in phenotype

Genes that are physically located on the same chromosome will be inherited together Ex Blond hair blue eyes

Genes on the sex chromosomes

The first 22 chromosome pairs

The last chromosome pair: determines biological sex

Females inherit X-linked genes as normal and the principle of dominance applies Men inherit one X gene but the other gene is the Y gene which makes them male so they are more likely to have defects

Someone who carries the recessive trait, but doesnt show it do to having a dominant to mask it