Which of the following statements correctly describes reverse genetics?
A) A mutated phenotype in an organism leads to the associated gene.
B) A mutated gene is introduced into an organism to determine the phenotype.
C) A gene is studied to understand the protein it encodes.
D) A transcript is used to make a protein encoded by a gene.
E) A gene is identified by bioinformatics.
B
You might also like to view...
Chiasmata form during which phase of meiosis?
a. prophase I b. metaphase I c. telophase I d. prophase II e. metaphase II
The nucleosome core particle consists of ____
a. two chromosomes linked together b. RNA wrapped around an 8-protein histone complex c. DNA wrapped around an 8-protein histone complex d. DNA associated with the nuclear envelope e. DNA replication enzymes associating to form the replisome
Answer the following statement true (T) or false (F). Experiment 2 depends on recombination.
A researcher is studying the rII locus of phage T4. Three rII- strains are obtained: A, B, C, and D. In the first experiment, E. coli strain K(?) is coinfected with two rII- strains simultaneously and the results are recorded. Infection with A and B phage = plaques form Infection with A and C phage = plaques form Infection with B and C phage = no plaques form Infection with B and D phage = no plaques form Infection with C and D phage = no plaques form In a second experiment, coinfections are performed first in E. coli strain B, then the progeny phage are used to infect E. coli strain K(?). Progeny of A and B phage = plaques form Progeny of B and C phage = plaques form Progeny of C and D phage = plaques form Progeny of B and D phage = no plaques from
Carbon-12 is the most common isotope of carbon and has a mass number of 12. However, the average atomic mass of carbon found on a periodic table is slightly more than 12 daltons. Why?
A) The atomic mass does not include the mass of electrons. B) Some carbon atoms in nature have an extra proton. C) Some carbon atoms in nature have more neutrons. D) Some carbon atoms in nature have a different valence electron distribution.