A normal metaphase chromosome with a midial centromere is
Metacentric
Sub-metacentric
Acrocentric
Telocentric
Morgan was awarded Nobel Prize for
The total number of nitrogenous bases in human genome is estimated to be about
In tryptophan operon
Which of the following bond is not present in $DNA$?
For providing evidence in favour of semiconservative way of $DNA$ replication; Taylor, Woods and Hughes performed experiments on