While we can use molecular clocks based on molecular sequence data to estimate the times at which various lineages diverged, we ultimately need the _____ to calibrate the clocks.
A) morphology
B) fossil record
C) radiometric data
D) B and C
E) All of the answer options are correct.
Fossil record?

Fossil record provides historical data documented by fossils, remains of organisms from earlier geological period that have been kept or preserved in rooks.

Morphology is the study of the shape or structure of a thing.

Radiometric data is the use of gamma rays to date rocks or carbon.

From the definitions above, only fossil records can be used to calibrate the clock, by providing information about lineage divergence, from fossils.

While we can use molecular clocks based on molecular sequence data to estimate the times at which various lineages diverged, we ultimately need the _____ to calibrate the clocks. A) morphology B) fossil record C) radiometric data D) B and C E) All of the answer options are correct. Fossil record?

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While we can use molecular clocks based on molecular sequence data to estimate the times at which various lineages diverged, we ultimately need the _____ to calibrate the clocks.
A) morphology
B) fossil record
C) radiometric data
D) B and C
E) All of the answer options are correct.
Fossil record?