Which of the following is a benefit of stem cell use? A. Cancer treatment is limited.
B. Harvesting embryonic stem cells destroys the embryo.
C. Replacement of cells from injury can be generated from stem cells.
D. Stem cell differentiation is unattainable.

the concept of nucleosome occupancy, which reflects the fraction of cells from the population in which a given region of dna is occupied by a histone octamer

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)