Question

In a codominance inheritance pattern,

both alleles for a trait are expressed simultaneously.

neither allele for a trait is expressed.

only one allele for a trait is expressed.

some genes are suppressed by the presence of other genes.

Answer 1

Both alleles for a trait are expressed simultaneously.

Explanation: in codominance both alleles contribute equally to the phenotype (e.g., human ABO blood group: A and B alleles together give type AB; roan cattle show both red and white hairs).