Inheritance Patterns

Most blood group genes are inherited as autosomal co-dominant traits with two or more alleles. In comparison, single-gene traits follow one of four inheritance patterns as described below.

• Sex-linked Recessive Pattern
• Sex-linked Dominant Pattern
• Autosomal Recessive Pattern
• Autosomal Dominant Pattern

Terms to look up

• autosome

• co-dominant

• dominant

• recessive

• sex-linked

Genetic Symbols

Inheritance Patterns

Blood Group Conventions