Donor cells in conjugation are labeled ____, whereas recipient cells are labeled ____
a. F+ cells; F- cells
b. F+ cells; F+ cells
c. F- cells; F+ cells
d. F1 cells; F2 cells
e. F+ cells; F2 cells
A
You might also like to view...
Sulfolobus are archaea that are commonly found in geothermal environments, with an optimum growth temperature of about 80°C. What feature allows archaea to thrive at such temperatures?
A. Archaea are highly adaptable to changing environmental temperatures. B. Archaea have two cell walls which helps prevent heat absorption. C. Archaeal membranes contain special lipids. D. Archaea use the heat from their environment to produce ATP.
The letter "B" in the accompanying figure represents ____
a. pericycle b. endodermis c. xylem d. root cortex e. phloem
Which of the following affects an individual’s water footprint?
A. water the lawn B. how much electricity he or she uses C. water used to irrigate crops that he or she uses D. all of the above
Molecular systematics might examine all of the following types of data EXCEPT ________
A) proteins B) DNA sequences C) amino acid sequences D) anatomical features