2. Consider this DNA nucleotide sequence:
ACG GTT CTA GAC
Which mutation will result in a frame shift?
A. substitution of T for the first A in the sequence
B. deletion of GTT from the sequence
C. insertion of C at the start of the sequence
D. substitution of ATA for ACG in the sequence

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.