This occurs when two or more alleles control the inheritance of a character is called

Incomplete dominence leads to blending of phenotypes ie when there are two dominant alleles so like red+white cud give pink. But codominance means when there are two dominant alleles both are expressed like in AB blood group both the A allele and B allele are expressed.

Explanation:

i think the answer would be d

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]