Donor cells in conjugation are labeled ____ cells, whereas recipient cells are labeled ____ cells
a. F+; Fb.
F+; F+
c. F-; F+
d. F1; F2
e. F+; F2
ANSWER: a
You might also like to view...
According to Miller and other researchers, the most difficult condition to have been met in an "RNA world" was to
A. have converted clay particles into organic molecules. B. produce specialized molecules, such as enzymes, lipids, and carbohydrates that supported life functions. C. produce chemical reactions that would produce large molecules. D. synthesize molecules that would coalesce into the correct shape and structure of cells. E. have established molecules that reproduce themselves.
A valid scientific hypothesis must be testable
Indicate whether the statement is true or false
A person with blood group A has both A and B type antibodies
a. True b. False
MHC incompatibility causes rejection of transplanted organs and at least a 75% match is needed for successful transplants between unrelated people.
a. true b. false