DNA fragments are isolated by:

(A) Electrophoresis
(B) Cloning
(C) PCR
(D) All of these

Answer: Electrophoresis
DNA fragments are isolated by gel electrophoresis.

Cell with 46 chromosomes is called:

(A) somatic cells
(B) Nerve cells
(C) Red blood cells
(D) All of these

Answer: (A) somatic cells
In human body somatic cells have 46 chromosomes.