The U.S. Constitutionâs 10th Amendment is arguably the most important of all the amendments in the brilliant document that helped shape the United States.
Not even identical twins have the same DNA--although theirs would be far closer than anyone else's. DNA changes over time. Odds of two siblings having the same DNA who did not split from the same zygote are vanishingly small.
And each cancer has its own genetic identity, or fingerprint, created by the DNA in its cells. So two people with breast cancer who are the same age, height, weight, and ethnicity, and who have similar medical histories, almost surely have two very different cancers.The only thing the cancers have in common is that they started from a breast tissue cell.o even though every cell of a cancer is related to the same original parent cell, all the cells that make up a cancer are not the same. The idea that different kinds of cells make up one cancer is called tumor heterogeneity..