In eukaryotesdoes dna replication proceed in one direction?

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?

Why is it incorrect to say that mitochondria function only as energy factories with cell

Which of the following explains why a tree is often used as a model to represent the principle of common descent