Question



Scientists took a clue from naturally occurring DNA mutations and began to use bacteria plasmids to alter genes in other organisms. First the simple, circular bacterial plasmid, that contains a small amount of DNA, is isolated. A piece of DNA with a gene of interest from another organism, plant or animal, is spliced into the plasmid DNA. Scientists place the transformed plasmid into a bacteria culture and the bacterial cells take up the altered plasmid. The new, recombinant bacterial cells multiply, now with the original plasmid containing the gene scientists were interested in cloning, for use in genetic engineering.

 In this case, scientists have copied a type of naturally occurring genetic mutation called

A)deletion.B)reversion.C)insertion.D)crossing over.

Answer 1

The answer is C. Insertion. The question asks for a mutation; insertion is a frameshift mutation. Crossing over is not a mutation because it occurs during meiosis when the chromosomes trade information!! ;)

Answer 2

Answer:

The correct answer is option C) "insertion".

Explanation:

Insertion is a type of mutation that consist in the addition of one or more nucleotides into a genetic sequence. This type of mutation occurs in nature, particularly by viruses that insert its genetic material into its host and by bacteria that uses plasmids to transfer desired traits. In this example scientists copied the insertion mutation approach to transform bacteria with a modified plasmid, producing recombinant bacterial cells with the desired plasmid inserted into its genetic sequence.