What are the advantages of gene banks?

Explanation

Gene banks are a type of bio repository, which collect and store genetic materials. The advantages of gene banks are as follows.
(i) The seeds of different genetic strains of commercially important plants can be stored for long periods in seed bank.
(ii) Using cryopreervation technique, the gametes of threatened species can be preserved in viable and fertile condition.
(iii) Endangered species can be revived.