Match List-I with List-II:

List-I (Scientists)	List-II (Discovery)
(A) Sutton and Boveri (B) Sturtevant (C) Henking (D) Griffith	(II) Chromosomal Theory of Inheritance (IV) Genetic maps (I) X-Body (III) Transformation in bacteria

Choose the correct answer from the options given below:

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

To understand why this match is correct, let us examine the contribution of each scientist step-by-step:

(A) Sutton and Boveri matches with (II) Chromosomal Theory of Inheritance:
Walter Sutton and Theodor Boveri proposed the Chromosomal Theory of Inheritance in 1902. They noted that the behavior of chromosomes during meiosis (cell division) mimics the behavior of Mendel's factors (genes). They used chromosomal movement to explain Mendel's laws, concluding that genes are located on chromosomes.

(B) Sturtevant matches with (IV) Genetic maps:
Alfred Sturtevant, a student of Thomas Hunt Morgan, used the frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes. Using this concept, he mapped their positions on the chromosome, constructing the very first genetic maps.

(C) Henking matches with (I) X-Body:
Hermann Henking in 1891 traced a specific nuclear structure during spermatogenesis in some insects. He observed that 50% of the sperm received this structure, whereas the other 50% did not. He named this structure the "X-body," which was later identified as the X-chromosome.

(D) Griffith matches with (III) Transformation in bacteria:
Frederick Griffith conducted a series of experiments in 1928 using the bacterium Streptococcus pneumoniae (which causes pneumonia) and mice. He discovered the "transforming principle," demonstrating that living non-virulent bacteria could be transformed into virulent bacteria when mixed with heat-killed virulent bacteria.

By matching each scientist to their corresponding discovery, we get:
(A) - (II)
(B) - (IV)
(C) - (I)
(D) - (III)