Plasmids are composed of
Folded $RNA$ molecules
Single stranded $DNA$
Circular double stranded $DNA$
None of the above
The contribution of cytoplasmic $DNA$ in cells to total $DNA$ is
When one or more genes are missing from middle part of chromosome, it is called
Identify $a, b$ and $c$
Which organism was used by Beadle and Tatum to proposed one gene-one enzyme hypothesis
The formation of multivalents at meiosis in diploid organism is due to