Geologic time periods are divided by
A. The appearance and disappearance of life forms
B. An equal number of years
C. The amount of sediment
D. All of the above

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.