Question

A mother with type B blood and father with type A blood have four children each with a different blood type. what is the best explanation for the occurrence of the four different blood types or the children?
A. Blood type is only determined by the dominant alleles.
B. blood type is determined by multiple alleles.
C. blood type is inclined by environmental conditions.
D. Blood type is a sex-linked trait.
Pleaseee help me

Answer 1

B. They are determined by I, AB, A, or B