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?

Which of the following events occurs first during meiosis?

TRUE/FALSEWhen a lawyer hears something he or she thinks is objectionable (based on the Rules of Evidence), the lawyer MUST object and state a reason for the objection in order to preserve the right to appeal that particular issue. 

TRUE/FALSE Regarding chain of custody, if it can be shown that there is any time from the events in question to the day of trial during which the location of the item (evidence) cannot be accounted for, the chain is broken. In that case, the evidence will be excluded unless another method of authentication can be used.

After DNA replication is complete, each strand of the original molecule is bound to a new complementary strand. This process is known as

Avery and his coworkers showed that the agent responsible for changing nonvirulent bacteria into virulent bacteria was

TRUE/FALSEEvidence is material if the proof that is being offered meets certain traditional requirements of reliability/authenticity.

Who proposed that in any DNA molecule, A = T and G = C?

TRUE/FALSEEvidence is relevant when it has any tendency in reason to make the fact that it is offered to prove or disprove either more or less probable. 

Evidence of crossing over can often be seen under the light microscope as a structure called a_________ .