Molecular Clocks

Molecular Clocks can measure seconds, minutes and hours ?

• False

• True

Molecular clocks measure the number of changes, or mutations, which accumulate in the gene sequences of different species over time.

• True

• False

Tags

NGSS.HS-LS4-2

Once the rate of mutation is determined, calculating the time of divergence of that species becomes relatively difficult.

• True

• False

Which protein has the fastest molecular clock?

• Hemoglobin

• Fibrinopeptides

• Cytochrome C

• All of the above

Evolutionary biologists use this information to deduce how species evolve, and to fix the date when two species diverged on the evolutionary timeline.

• True

• False

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

NGSS.HS-LS4-4

A aspect of molecular clocks is that different genes evolve at different rates, which gives us flexibility to date events throughout the history of life.

• True

• False

Tags

NGSS.HS-LS4-2

The molecular clock is not useful for obtaining evolutionary information when you have little or no fossil record.

• True

• False

Molecular clocks can't be used for putting a series of evolutionary events into chronological order.

• True

• False

Molecular clocks describe the relationship between evolutionary rate and time.

• True

• False

Genetic mutations don't take over millions of years to form

• True

• False