The virus of deoxyvira $ (sub-phylum)$ contains
$mRNA$
$tRNA$
$DNA$
$rRNA$
In the developmental history of mammalian heart, it is observed that it passes through a two-chambered fish-like heart, three-chambered frog-like heart and finally four-chambered stage. To which hypothesis can this above cited statement be approximated
According to the discovery made in $1980's$. $RNA$ can act like enzyme to assemble new $RNA$ molecules on $RNA$ template. Which of the following statements is not proved by this theory?
Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of
The ratio of methane, ammonia and hydrogen in Stanley Miller's experiment was