What are base pair insertions/deletions

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

Me with biology endocrine system crossword also image left i need with hw

There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell