Suppose after bacterial conjugation, the recipient cell contained the a and b genes. From this information, what can
you conclude?
a. The donor cell was unable to make contact with the recipient cell.
b. The donor cell was F-.
c. The donor cell produced an abnormal sex pilus.
d. All of the genes could not fit through the sex pilus at one time.
e. The sex pilus was broken before the rest of the genes could be transferred.
ANSWER: e
You might also like to view...
You are performing a karyotype for the first time and you forget to add the colchicine. How do you predict this will affect your karyotype?
A. No affect - your karyotype will look normal. B. You will be unable to see any chromosomes under the microscope. C. You will only be able to see one of each chromosome. D. The chromosomes in some cells will look normal (highly compacted) but in other cells distinct chromosomes will be hard to identify
Studies of sex chromosome aneuploidy reveal that ____ necessary for survival
a. the X chromosome is not b. the Y chromosome is not c. two copies of the X chromosome are d. two copies of the Y chromosome are e. at least one copy of both the X and the Y chromosome is
The United States has used export subsidies to encourage the exportation of
a. steel. b. agricultural products. c. automobiles. d. computers.
Action potentials are normally carried in only one direction: from the axon hillock toward the axon terminals. If you experimentally depolarize the middle of the axon to threshold, using an electronic probe, then _____
A) no action potential will be initiated B) an action potential will be initiated and proceed only in the normal direction toward the axon terminal C) an action potential will be initiated and proceed only back toward the axon hillock D) two action potentials will be initiated, one going toward the axon terminal and one going back toward the hillock