In which of the following are somaclonal vari | vedclass

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(D) Somaclonal variation refers to the genetic variations observed in plants regenerated from tissue culture (callus culture). These variations arise

Vedclass · Accepted Answer

Plants produced through tissue culture

Vedclass · Answer

(D) Somaclonal variation refers to the genetic variations observed in plants regenerated from tissue culture (callus culture). These variations arise due to the instability of the genome during the process of in vitro culture. Since tissue culture involves the asexual propagation of cells,the resulting plants are expected to be genetically identical to the parent (clones); however,mutations or epigenetic changes during the culture process lead to 'somaclonal variations'. Therefore,the correct option is $D$.

In which of the following are somaclonal variations observed?

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$S$ - Statement: An undifferentiated mass of cells in a culture is called callus.
$R$ - Reason: Auxin and cytokinin are added as growth regulators in the culture medium for callus induction.

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