18. Biotechnology

The expression of the Pax-6 gene when vertebrate and fruit fly versions of the gene are exchanged between these animal groups illustrates __________.

In recombinant DNA technology, the term vector refers to __________.

An enzyme that cuts DNA at a symmetrical sequence of bases is called __________.

When a typical restriction enzyme cuts a DNA molecule, the cuts are staggered so that the DNA fragments have single-stranded ends. This is important in recombinant DNA work because __________.