Which of the following cut(s) DNA at highly specific target sequence? a.DNA ligase b. DNA polymerase...

Which of the following cut(s) DNA at highly specific target sequence?

a.DNA ligase

b. DNA polymerase

c.Restriction enzymes

d. RNA polymerase

The propagation of recombinant RNA is a culture of E. coli is known as _____.


b. DNA hybridization

c.DNA ligation

d. DNA cloning

Genetic engineering _____.

a.can be used to make many copies of recombinant DNA introduced into a host cell

b. can be used to alter the inherited characteristics of an organism

c.raises ethical questions in the minds of some people

d. all of the above

4. When DNA fragments are placed on an electrophoresis gel and subjected to an electrical current, which fragments move the farthest in a given time?

a.The smallest

b. The largest

c.PCR fragments

d. mRNA fragments

Homework Answers

Answer #1

1. c.Restriction enzymes

restriction enzymes (or restriction endonucleases) are used to cut DNA into smaller fragments. The cuts are always made at specific nucleotide sequences.

2d. DNA cloning

DNA cloning is a molecular biology technique that makes many identical copies of a piece of DNA, such as a gene.

3 d. all of the above

Genetic engineering refers to the direct manipulation of DNA to alter an organism's characteristics (phenotype) in a particular way.

4a.The smallest

Because the smallest fragments move the most quickly, they will migrate the farthest during the time the current is on.

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