Who provided X-ray diffraction photographs of purified DNA fibers that suggested a helical structure with a consistent diameter of about 2 nm and a complete helical turn every 3.4 nm?
A. Hershey and Chase
B. Watson and Crick
C. Chargaff
D. Franklin
Answer: D
You might also like to view...
____ will inhibit the ability of pathogens to infect other cells.
What will be an ideal response?
What are the two different types of pathways in the nervous system?
What will be an ideal response?
Which statement accurately reflects the data in the accompanying figure?
a. Successful foraging is independent of prey density.
b. Hunting groups of two to three individuals are more effective at low prey densities.
c. Larger hunting groups are more effective at low prey densities.
d. Hunting groups of two to three individuals are more effective at all prey densities.
e. Successful foraging is independent of hunting group size.
The purpose of the oil when using the 100x objective is to increase the amount of ________ collected by the objective lens.
A) Light B) Resolution C) Diffraction D) Air