Ap biology?

Question

Rosalind Franklins pictures of the DNA double helix were taken using the technique known as

bright field microscopy

diffraction

flurescence

transmission electron microscopy

or

x ray crystallography

Answer 1

Rosalind Franklin's contributions to the Crick and Watson model include an ***X-ray*** photograph of B-DNA.

x ray crystallography

Answer 2

x ray crystallography- she looked at the diffraction pattern of xrays shot down the center of the double helix and deduced that only a doublehelix can produce such a pattern.

Answer 3

X ray crystallography.

Hope you're working on a set of practice questions and not a take home test.