Biology 8th Edition by Kenneth Mason ,Jonathan Losos,Susan Singer,Peter Raven,George Johnson

تمرين 9

What is the role of cohesin proteins in cell division
A) They organize the DNA of the chromosomes into highly condensed structures.
B) They hold the DNA of the sister chromatids together.
C) They help the cell divide into two daughter cells.
D) They connect microtubules and chromosomes.