In 1869, dna was discovered within the nuclei of cells. by the 1940s, scientists knew that chromosomes were made of both dna and protein but did not know which was the genetic material of cells. in the 1950s, scientists demonstrated that dna is the material responsible for heredity. in 1953, using information collected by other scientists, an american biologist and an english physicist built a three-dimensional model of dna. these discoveries best illustrate the importance of

The correct answer is collaborative efforts between the scientists.  

For the scientists functioning in classified areas, collaboration with other researchers provides opportunities to expand their views and strengthen their research via the conduct of peer-reviewed, open literature research.  

Collaboration is essential among the scientists, as the common goal provides them with significant reasons to function in combination. Collaboration provides each member of the team with equal chances to communicate and participate in their ideas.  

i do not know and i have a 100 in this class

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."