Kim et al (1973) suggested L shape model of t- RNA by X-Ray diffraction while studying phenyl alanine t - RNA of yeast.

Correct Option: A

Kim et al (1973) suggested L shape model of t- RNA by X-Ray diffraction while studying phenyl alanine t - RNA of yeast.

Griffith’s experiment with Pneumococcus proves that DNA is the genetic material.

Correct Option: A

Griffith’s experiment with Pneumococcus proves that DNA is the genetic material.

In DNA adenine always pairs with thymine and guanine always pairs with cytosine, this is called complementary base pairing.

Correct Option: C

In DNA adenine always pairs with thymine and guanine always pairs with cytosine, this is called complementary base pairing.

The number of base pairs (bp) found in the haploid genome of humans is 3 × 109.

Correct Option: D

The number of base pairs (bp) found in the haploid genome of humans is 3 × 109.

Ribozymes are catalytically active RNA molecule discovered in 1980’s. They are self splicing introns indicating their possible role as intermediates in the evolution of biological systems from abiotic substances.

Correct Option: C

Ribozymes are catalytically active RNA molecule discovered in 1980’s. They are self splicing introns indicating their possible role as intermediates in the evolution of biological systems from abiotic substances.