Before a cell divides, an exact copy of each chromosome is made by the process of
A) genetic engineering

B) replication

C) mutation

D) recombination

the answer is B

Explanation:

this question literally gives the definition of replacation lol

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to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)