The scissors in the figure represent
a. restriction enzymes.
b. reverse transcriptases.
c. DNA polymerases.
d. RNA polymerases.
e. DNA ligases.
Answer: a
You might also like to view...
What organic compound was widely used as a
rat poison until 1980?
a. warfarin b. amygdalin c. linamarin d. cyanide e. myristicin
Before photosynthesis evolved, ________ was rare in Earth's atmosphere
A) O2 B) CO2 C) H2O D) N2 E) air
The Miller and Urey apparatus produced hydrogen cyanide (HCN), formaldehyde (CH2O), and glycine (an amino acid) in their first experiment, why was it important that they use water vapor, methane, carbon monoxide, ammonia and hydrogen as their reactants and an electrical spark as their energy source?
A. They knew these reactants were available in their lab and in today's atmosphere.
B. These reactants were found in today's atmosphere therefore they should be used to try to replicate the early Earth atmosphere.
C. Each of the reactants were readily changed into proteins and DNA.
D. These reactants were useful because their products were able to be predicted before the experiment began, it is always good to know the outcome of an experiment to achieve success with the experiment.
E. These reactants were hypothesized to have made up the early Earth atmosphere, the electricity was used to emulate lightening strikes.
In a tetraploid species, a euploid individual would have __ sets of chromosomes.
A. 2 B. 4 C. 6 D. 8 E. 2n+2