Identify three types of chromosomal alterations.

If you are talking about a chromosomal abnormality, it is a extra, missing, or irregular portion of the DNA. According to URMC, three different abnormalities are Turner Syndrome, Mosaic Down Syndrome, and Translocation Down Syndrome.

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey

The answer is c : ) hope this answered your question!