Question

Give any two factors responsible for genetic variations. Define explant.

Answer 1

The two factors responsible for genetic variations are

i) Mutations

ii)Crossing over and recombination.

EXPLANT: An explant is a part of plant that is excised from an original location and used for initiating a culture. It may be root tip, shoot bud, anther, embryo, ovule etc,. Normally undetermined cells of plant are used as explant.