The polytene chromosomes were discovered for the first time in
Chironomus
Fruitfly
Drosophila
House fly
The enzyme that breaks $H_2$ bonds in $DNA$ is
Exchange of chromosome segments between maternal and paternal chromatids during synapsis in meiosis is called
Percentage of $( G + C )$ is
What is transfer of $DNA → RNA$ called
The terms cistron, recon and muton were proposed by