Is the key feature of, the genetic mechanism that allows production of the huge diversity of antibody molecules.

Somatic recombination

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Operation of differentiation factors

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Presence in the genome of a huge array of structural genes, each coding for a different antibody protein

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The operation of single-point mutations

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Solution

The correct option is A Somatic recombination
Somatic recombination is a type of gene arrangement by which the cells of the adaptive immune system physically cut out small regions of DNA which is related to the genetic mechanism.
So, the correct option is 'Somatic recombination'.

Suggest Corrections

	List I		List II
A	Radioactive antibody	1	Substance that can be constructed in the laboratory. Its base sequence can be deduced from the amino acid sequence of the protein it codes for.
B	Artificial gene	2	Substance that can be used to identify colonies of genetically engineered bacteria that make a particular gene product.
C	Amplification	3	The use of entire array of genes of an organism in order to obtain the particular gene product.
D	To produce clone	4	Abnormal enhanced replication of a plasmid in each cell.
E	Shotgun cloning	5	A large population of identical cells.