In man, sperms contain autosomes and
Only $Y$ chromosome
Only $X$ chromosome
Both $X$ and $Y$ chromosomes
Either $X$ or $Y$ chromosomes
The accessibility of promoter regions of bacterial $DNA$ in many cases regulated by the interaction of proteins with sequences termed
In a mutational event, when adenine is replaced by guanine, it is a case of
The enzyme that breaks $H_2$ bonds in $DNA$ is
Which one of the following true
A genome is the