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.  

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

the correct answer is 2 and 4