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Question

Chromosome theory of heredity was postulated by

A
Charles Darwin
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B
Gregor Mendel
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C
Sutton and Boveri
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D
Har Gobind Khorana
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Solution

The correct option is C Sutton and Boveri
Mendel, during his hybridization experiments on pea plant, proposed presence of unit factors for each trait as heredity material that is faithfully transmitted from one generation to next. He called them “factors”. Sutton and Boveri recognized parallelism between inheritance of Mendel's factors and behavior of the chromosome in meiosis and fertilization. This led them to propose the chromosomal theory of inheritance states that genes are linearly arranged on chromosomes at specific loci. Darwin proposed the theory of natural selection to explain the process of evolution. Khorana extended the experiment of Nirenberg and Holley to reveal that polycytidylate encodes a polypeptide containing only proline and polyadenylate encodes polylysine. M. Nirenberg, Khorana, and Holley were awarded Nobel Prize for in vitro synthesis of polypeptides using artificially synthesized mRNA. Thus, the correct answer is option C.

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