Acell shows alignment of chromosomes along the equatorial plate. what will happen next? a. formation of two complete sets of chromosomes b. separation of sister chromatids and centromeres c. replication of dna to form two copies of chromosomes

The correct answer is B. Separation of sister chromatids and centromeres.

During metaphase of mitosis, there is alignment of chromosomes at the equatorial plate of the cell and then Anaphase begins with separation of the duplicated centromeres of each pair of sister chromatids. The daughter chromosomes starts moving toward opposite poles due to the action of the spindle fibres. As this stage chromosomes appear like V or J shape. At the end of anaphase, a complete set of chromosomes has gathered at each pole of the cell.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."