Explain the role of scientist :

$1.$ Francis Crick

$2.$ Friedrich griphith $(1928)$

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Francis Crick proposed the Central dogma in molecular biology, 

He concluded that the $R$ strain bacteria had somehow been transformed by the heat-killed $S$ strain bacteria. Some ‘transforming principle’, transferred from the heat-killed $S$ strain, had enabled the $R$ strain to synthesise a smooth polysaccharide coat and become virulent

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  • [NEET 2019]

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