Which Is an Example of a Recombinant DNA Molecule

question 20

Multiple Choice

Which is an example of a recombinant DNA molecule?

• A)a single-stranded RNA hybridized to a single-stranded DNA
• B)a genomic fragment of human DNA ligated into a bacterial plasmid vector
• C)a bacteriophage chromosome in a bacterial cell
• D)a bacterial plasmid cut with a restriction enzyme and then resealed using ligase

---

Definitions:

DNA Profiling

A technique used to identify individuals by characteristics of their DNA, commonly used in forensic science to assist in identifying individuals or determining parentage.

DNA Regulatory Elements

Sequences of DNA that control the expression of genes, acting as switches to turn genes on or off.

Genomic Library

A collection of DNA fragments that represent the entire genome of an organism, which are stored in and can be propagated in a suitable host organism.

cDNA Library

A collection of complementary DNA (cDNA) clones that represent the mRNA transcripts present in a cell or tissue, used for gene expression studies.