What did Watson and Crick deduce about the three-dimensional structure of DNA?
A) There is a repeating pattern every 3.4 nm and every 0.34 nm.
B) It is a double-stranded helix.
C) It contains a lot of phosphorus.
D) It is a large molecule.
E) It consists of supercoiled chromatin.
B
You might also like to view...
Blood returning to the mammalian heart in a pulmonary vein will drain first into the
A. vena cava. B. left atrium. C. right atrium. D. left ventricle. E. right ventricle.
The migratory patterns of many animals encourage ____
a. a bottleneck b. mutation c. a founder effect d. gene flow e. genetic drift
In 1880, Walther Flemming identified ________, threadlike bodies seen in dividing cells
Fill in the blank with correct word.
Which of the following recombinant therapeutic proteins, produced in bacterial cells, is used to treat blood cancers?
A) Erythropoietin B) Interferon C) Insulin D) tPA E) Growth hormone