STD 12 - 6. evolution — BIOLOGY STD 12 Science — Question

$(I)$ Separation of $DNA$ fragment by electrophoresis.

$(II)$ Digestion of $DNA$ by restriction endonucleases.

$(III)$ Hybridization using labeled $VNTR$ probe

$(IV)$ Isolation of $DNA$.

$(V)$ Detection of hybridized $DNA$ fragments by autoradiography.

$(VI)$ Transferring of separated $DNA$ fragment to synthetic membranes.

$I.$ Chemical fertilizers cause pollution of water bodies as well as groundwater, besides getting stored in crop plants. Therefore, environmental scientists are pressing for a switch over to organic farming.

$II.$ Organic farming is a form of agriculture that relies on techniques such as crop rotation, green manure, compost and biological pest Select the correct statement