A timeline of important discoveries about DNA is shown below. These discoveries have contributed to our current knowledge about DNA. Which statement best summarizes the development of knowledge about DNA over time? a Past knowledge about DNA was discarded as each new discovery was made. b Ideas about DNA have remained unchanged over time. c Changes in ideas about DNA are based on opinion. d Scientists gained more knowledge about DNA as new evidence became available.

Answer 1

The statement that best summarizes the development of knowledge about DNA over time is:

d Scientists gained more knowledge about DNA as new evidence became available.

This reflects the scientific process, where each discovery builds upon previous knowledge, leading to a more comprehensive understanding of DNA.