Which of the following is not an effect of a mutation?

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#Question id: 38779

#Plant Biotechnology

Q. Assertion (A): Vegetatively propagated crops are more prone to rapid spread of viral diseases.

Reason (R): Vegetative propagules directly transmit virus particles from the infected parent plant.

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#Question id: 38780

#Plant Biotechnology

Q. Statement I: Sexual reproduction generally limits virus transmission in plants.

Statement II: Many plant viruses are now known to be seed-transmissible.

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#Question id: 38781

#Plant Biotechnology

Q. Assertion (A): Shoot apical meristems are preferred explants for eliminating plant viruses.

Reason (R): Viruses are unable to replicate efficiently in rapidly dividing meristematic cells.

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#Question id: 38782

#Plant Biotechnology

Q.Statement I: Meristem culture is widely used to recover virus-free plants.

Statement II: Viral titres are usually very low or absent in shoot apical meristems.

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#Question id: 38783

#Plant Biotechnology

Q. Assertion (A): Meristem culture has been extensively used in crops like potato and sugarcane.

Reason (R): These crops are clonally propagated and highly susceptible to viral infections.

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#Question id: 38784

#Plant Biotechnology

Q. Statement I: Meristem culture was first applied to produce virus-free Dahlia plants.

 Statement II: This application was reported by Morel and Martin in 1952.