The most important experimental result that suggested to Watson and Crick that DNA was in the form of a helix was
a. the finding of Chargaff that DNA always had equal amounts of A and T and equal amounts of G and C.
b. Griffith's results with transformation.
c. the discovery that DNA is wound around histone proteins.
d. X-ray data from Rosalind Franklin .
e. understanding DNA replication.
D
You might also like to view...
Fatty acid analysis
A. can be used to identify Gram-negative bacteria. B. can be used to identify Gram-positive bacteria. C. uses gas chromatography to analyze fatty acid methyl esters. D. requires that cells be grown under standardized conditions. E. All of these choices are correct.
In most protostomes, the ____ is the developmental origin of the body cavity between the gut and muscles of the body
wall.
a. schizocoelom b. mesoglea c. archenteron d. enterocoelom e. blastopore
Which is most closely related to the hagfishes?
A. Lancelets B. Tunicates C. Lampreys D. Cartilaginous fishes
Conservation biology includes
a. a survey of biological diversity. b. a look at the evolutionary origins of diversity. c. ecological considerations of diversity. d. an effort to maintain biodiversity. e. all of these.