Match List-I with List-II:

List-I	List-II
Transgene	Used for / Products
(A) α-1-antitrypsin (B) cryIAc (C) Antisense RNA (D) cryIAb	(I) Meloidegyne incognitia (II) Corn borer (III) Treat emphysema (IV) Cotton bollworms

Choose the correct answer from the options given below:

The correct option is (A)- (III), (B)- (II), (C)- (I), (D)- (IV).

Let us break down the matching between the transgenes listed in List-I and their uses or target pests listed in List-II:

(A) α-1-antitrypsin matches with (III) Treat emphysema:
α-1-antitrypsin (AAT) is a proteinase inhibitor. Biological products created using transgenic animals are used to treat specific human diseases. For instance, the human protein α-1-antitrypsin is produced in the milk of transgenic sheep and is used in the clinical treatment of emphysema, a chronic respiratory disease characterized by damaged alveoli.

(B) cryIAc matches with (II) Corn borer:
The cry genes encode insecticidal toxin proteins (Bt toxins) from the bacterium Bacillus thuringiensis. The cryIAc gene is introduced as a transgene to provide resistance against specific agricultural pests.

(C) Antisense RNA matches with (I) Meloidegyne incognitia:
Antisense RNA technology is employed for RNA interference (RNAi), a cellular defense mechanism. RNAi is used to protect transgenic host plants (like tobacco) from infestation by the parasitic nematode Meloidogyne incognita by silencing specific nematode genes.

(D) cryIAb matches with (IV) Cotton bollworms:
The cryIAb transgene is another Bt toxin gene engineered into plants. It provides target-specific toxicity, protecting the crop against pests like cotton bollworms.

By putting these associations together, we get:
(A) - (III)
(B) - (II)
(C) - (I)
(D) - (IV)