A type of horizontal gene transfer in prokaryotes, in which a cell receives bacterial DNA from a bacteriophage, is
A. fixation.
B. transformation.
C. replication.
D. transduction.
E. conjugation.
D. transduction.
You might also like to view...
In the DNA ligase reaction, the lysine residue:
A. serves as the nucleophile displacing the phosphate group 3' to the nicked site. B. serves as the electrophile displacing the phosphate group 3' to the nicked site. C. remains phosphorylated after the ligase reaction. D. serves as a nucleophile, which displaces the pyrophosphate from ATP. E. remains bound to AMP, ready to repeat the reaction.
Answer the following statement(s) true (T) or false (F)
1. The axon of a neuron can only communicate with other neuronal cells. 2. Neurons are the only electrically-active cells. 3. When a neuron is not firing, the sodium-potassium pump is inactive. 4. Humans are unique among animals due to our highly-evolved repertoire of sensory receptors. 5. A single type of receptor is responsible for detecting all tactile pressure in humans.
Conifer seeds develop in reproductive structures called ________
Fill in the blank(s) with correct word
An enzyme that catalyzes the cutting and resealing of DNA, and is translated from insertion sequences, is
A) RNA polymerase. B) DNA ligase. C) DNA helicase. D) transposase. E) DNA polymerase.