Principle of Inheritance and VariationHard

Question

Due to discovery of ehich of the following in 1980′s the evolution was termed as RNA world ?

Options

A.mRNA, tRNA, rRNA synthesize proteins
B.In some virses, RNA is genetic material
C.Some RNA have enzymatic property
D.RNA is not found in all cells

Solution

Ribozymes. catalytically active RNA molecules discoverd in 1980′s are self-splicing introns indicating their possible role as intermediates in the evolution of biological systems from abiotic substances.

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