Genetics--Patterns of Inheritance

Incomplete dominance

Codominance

Complete dominance

Partial dominance

Complete dominance

Incomplete dominance

Codominance

Partial dominance

A blend of both alleles

Only the dominant allele is expressed

Both alleles are equally expressed

Only the recessive allele is expressed

A red flower and a white flower producing pink offspring

A black chicken and a white chicken producing speckled offspring

A tall plant and a short plant producing medium height offspring

A blue-eyed parent and a brown-eyed parent producing a brown-eyed child

Red flowers

White flowers

Pink flowers

Red and white flowers

Type A

Type B

Type AB

Type O

A red flower and a white flower producing pink offspring

A black chicken and a white chicken producing speckled offspring

A tall plant and a short plant producing tall offspring

A blue-eyed parent and a brown-eyed parent producing a child with green eyes

1:2:1

3:1

1:1

2:1

Complete dominance

Incomplete dominance

Codominance

Partial dominance

The dominant allele is not strong enough to mask the recessive allele.

Both alleles are expressed equally.

The alleles blend to produce a new phenotype.

The recessive allele is stronger than the dominant allele.