A timeline of important discoveries about DNA is shown below. These discoveries have contributed to our current knowledge about DNA.

Question

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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 option reflects the progressive nature of scientific understanding, where new discoveries build upon previous knowledge.