A man with type A blood marries a woman with type B. Their offspring all have type AB blood. The pattern of inheritance is called

A) codominance.
B) sex-linkage.
C) crossing over.
D) incomplete dominance.

Respuesta :

the answer is: a) codominance

A  pattern of inheritance  is called codominance ( answer A)


  Explanation

Co  dominance is form  of dominance  whereby the alleles    of gene pair  is   heterozygote  and are fully  expressed.

This  results  in offspring with a  phenotype  that  is neither  dominant  nor  recessive.

A  person with  AB  has a  co  dominance  inheritance  since  both  A allele  and B allele  are  equally  expressed.