Question

situations in which one allele for a gene is not completely dominant over another allele for that gene are called....

Answer 1

Incomplete dominance.

Step-by-step explanation:

it's not completely dominant, so it's incomplete.

Answer 2

This is called incomplete dominance. When an something is heterozygous for an incomplete dominant gene, the resulting phenotype will be somewhere between the two. For example if a plant has a tall allele and a short one, but neither shows complete dominance over the other, the plant height will be somewhere in the middle.