Question

in the first drop - down box, select the word part in the following term. then, in the second drop - down box, select the correct definition for that word part. myelodysplasia (click to select) (click to select) (click to select) my myelo dyspla asia

Explanation:

In medical - related word parts, "myelo -" is a common prefix. It refers to the spinal cord or bone marrow. For the term "myelodysplasia", the significant word part is "myelo" which has the meaning related to spinal cord or bone marrow.

Answer:

First drop - down box: myelo
Second drop - down box: Spinal cord or bone marrow