Question

Maximum genetic variation can be created through

• A. introduction and hybridization
• B. introduction, hybridization and selection
  
• C. introduction, mutation, hybridization and genetic engineering
• D. selection and mutation

Answer 1

The correct option is C introduction, mutation, hybridization and genetic engineering

Genetic variation on crop plants can be created by methods like conventional breeding methods with the introduction of wild varieties, hybridization, mutation and genetic engineering.
Introduction is a process of introducing plants from their growing locality to a new locality or from the place where it is grown to an entirely new area. It is the easiest or most common method of crop improvement.
Genetic improvement of a plant species in order to create desired plant types that are better suited for cultivation, give better yield and are disease resistant is called as plant breeding. To get the desired characteristics, wild varieties can be used as one of the parents and conventional breeding procedures could be applied.
Mutation breeding a comparatively quicker method to get genetic variability. With the use of mutagens, changed phenotypes can be obtained which again will be selected and bred.
Genetic engineering is a modern approach where a gene is introduced into the genotype of the variety under consideration. Gene introduction is done for improved yield characteristics or disease resistance or biofortification etc.