If chromosome structure is altered because a part of it is missing or is extra, I predict that…

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)]

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.

answer///malignant melanoma;