Genetically modified (GM) crops contain modified genetic material due

Genetically modified (GM) crops contain modified genetic material due to :

introduction of new DNA
removal of existing DNA
introduction of RNA
introduction of new traits

Select the correct answer using the code given below:

[amp_mcq option1=”1 and 2 only” option2=”1, 2 and 3″ option3=”3 and 4″ option4=”1, 2 and 4″ correct=”option1″]

This question was previously asked in

UPSC CDS-1 – 2016

Genetically modified (GM) crops are created by altering the genetic material (DNA) of a plant. This modification is achieved through various techniques, most commonly by introducing new DNA sequences (transgenes) that confer desired traits (e.g., insect resistance, herbicide tolerance). Modification can also involve altering or removing existing DNA sequences using gene editing tools. Therefore, the introduction of new DNA and the removal of existing DNA are direct causes of modified genetic material in GM crops. Introduction of RNA (statement 3) is not the primary method for creating stable genetic modification in the genome, although RNA interference techniques derived from GM methods can use RNA to regulate gene expression. Introduction of new traits (statement 4) is the intended outcome or result of the genetic modification, not the cause of the modification itself. Hence, the modification is primarily due to the introduction of new DNA and/or removal/alteration of existing DNA.

Genetic modification involves making changes to the organism’s DNA, which can include adding new DNA or altering/removing existing DNA.

Other genetic modification techniques include targeted mutagenesis, gene editing (like CRISPR-Cas9), and cisgenesis (introduction of genes from the same species). The core principle remains the alteration of the organism’s genetic material (DNA).

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