Which scientific company underwent this actual brand identity transformation to reflect its evolution from traditional chemistry to advanced life sciences?

Test your knowledge about how scientific companies have evolved their brand identities over time to reflect changing scientific paradigms and technological advancements. Many major scientific instrument and research companies have undergone significant rebranding efforts to stay relevant in the rapidly advancing world of science and technology. See if you can identify which transformation accurately represents a real scientific brand's evolution.

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Merck changed its logo from a chemical flask symbol (1970s) to a stylized double helix DNA strand (2015)
Thermo Fisher Scientific replaced its atom orbital logo with microscopic cell imagery in vibrant colors
Pfizer transitioned from a pill-shaped emblem to a neural network visualization
Agilent Technologies evolved from a spectrum wavelength symbol to a CRISPR gene editing representation