In a gene bank,in what form is the genetic material stored?

If the line $3x - 2y + 6 = 0$ meets the $X$-axis and $Y$-axis at points $A$ and $B$ respectively,then the equation of the circle with radius $AB$ and center at $A$ is:

The mean of the numbers obtained on throwing a die having $1$ on three faces,$2$ on two faces,and $5$ on one face is

The electron in a hydrogen atom makes a transition from an excited state to the ground state. Which of the following statements is true?

Assertion : Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion.
Reason : For heavy nuclei,binding energy per nucleon increases with increasing $Z$ while for light nuclei it decreases with increasing $Z$.

Selection is a method related to which of the following?