During transfer of T-DNA to a plant cell, what is transferred?

a. the original double-stranded T-DNA, displaced by synthesis of a new double-stranded copy
b. a newly synthesized double-stranded copy of the original T-DNA
c. the entire Ti plasmid, and all but the T-DNA is degraded
d. a single pre-existing DNA strand displaced by the synthesis of a new strand
e. a newly synthesized single strand


Ans: d

Biology & Microbiology

You might also like to view...

Which element is most likely to accept an electron from another atom?

a. chlorine (7 valence electrons) b. calcium (2 valence electrons) c. neon (8 valence electrons)

d. carbon (4 valence electrons) e. potassium (1 valence electron)

Biology & Microbiology

The repeated contraction and relaxation of the smooth muscle in the intestinal wall creating a backand-

forth movement is called a. peristalsis. b. regurgitation. c. segmentation. d. motility. e. emulsification.

Biology & Microbiology

Which of the following are accurate descriptions of the properties of water? (select all that apply)

A. Water molecules are polar, and thus dissolve other polar or ionic substances. B. Water molecules are nonadhesive, tending to repel each other forcefully, resulting in a low surface tension. Water molecules are nonadhesive, tending to repel each other forcefully, resulting in a low surface tension. C. Water shrinks when it crystallizes, and ice is more dense than liquid water. D. Water's high heat of vaporization makes evaporation an effective way for many organisms to shed excess heat.

Biology & Microbiology

Translation occurs at the ________ in the cell

Fill in the blank(s) with correct word

Biology & Microbiology