Consider the following statements about genetic engineering : 1. The technique of genetic engineering involves creation of recombinant DNA, use of gene cloning and gene transfer. 2. Restriction enzymes cut DNA at specific locations. 3. Restriction enzymes split the entire double-stranded DNA into two strands. Which of the statements given above is/are correct?
1 and 2
The question asks us to identify which of the given statements about genetic engineering are correct. Let's examine each statement:
1. The technique of genetic engineering involves the creation of recombinant DNA, use of gene cloning, and gene transfer.
This statement is correct. Genetic engineering indeed involves these techniques. Recombinant DNA technology allows the combining of DNA from different organisms. Gene cloning is used to produce multiple copies of a specific gene of interest, and gene transfer is the process of introducing new DNA to an organism's cells.
2. Restriction enzymes cut DNA at specific locations.
This statement is also correct. Restriction enzymes recognize specific sequences in DNA and make precise cuts at these locations, which is fundamental for genetic engineering processes, especially in the creation of recombinant DNA.
3. Restriction enzymes split the entire double-stranded DNA into two strands.
This statement is incorrect. Restriction enzymes do not separate the entire double-stranded DNA into two strands. Instead, they make specific cuts at recognized sequences within the DNA, leading to fragments that could be used for further genetic manipulation.
Thus, based on the analysis above, the correct statements are 1 and 2. Hence, the correct answer is 1 and 2.
Similar Questions
Which one of the following statements about natural selection is not correct?
Which of the following is/are the basic step(s) in genetically modifying an organism?
1. Identification of DNA with desirable genes
2. Introduction of the identified DNA into the host
3. Maintenance of introduced DNA in the host and transfer of the DNA to its progeny
Select the correct answer using the code given below.
Consider the following stages of insulin production procedure through gene technology :
1. Isolation of insulin coding gene from humans
2. Inserting the insulin coding gene into a plasmid vector
3. Inserting the recombinant plasmid vector into the bacterium (E. coli)
Which of the following is a correct sequence of the above?
Important Questions from Genetics and Evolution
Different varieties of the same gene are called
In a sexually reproducing organism, which one of the following statements is appropriate both for the parent and offspring?
In most prokaryotes, the chromosome number is:
Bacterial DNA is referred to as naked because it is not associated with:
The two important features of sexual reproduction in higher organisms that create genetic diversity in offspring are
