Which of the following techniques were most to watson and crick in determining the structure of dna?

a. x-ray crystallography
b. electrophoresis
c. radioactive labeling
d. cloned dna

In the human body fibrinogen is necessary for sealing cuts and stopping the loss of blood. since fibrinogen is made of chains of amino acids it is an example of which type of organic molecule

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Asap what occurs after cytokinesis is completed at the end of meiosis 1?