Injection of double-stranded RNA can lead to gene silencing by degradation of RNA molecules complementary to either strand of the dsRNA. Could RNAi be used in gene therapy for a defect caused by a recessive allele? A dominant allele? If so, what might be the major obstacle to using RNAi as a therapeutic agent?

What are some of the impacts of biotechnology on crop plants in the United States?

In the context of recombinant DNA technology, of what use is a probe?

Compare and contrast methods for making transgenic plants and transgenic Drosophila.

If you performed a PCR experiment starting with only one copy of double-stranded DNA, approximately how many DNA molecules would be present in the reaction tube after 15 cycles of amplification?

The bacteriophage lambda genome can exist in either a linear form or a circular form.

How many fragments will be formed by restriction enzyme digestion with XhoI alone, with XbaI alone, and with both XhoI and XbaI in the linear and circular forms of the lambda genome?