26.5 Molecular Clocks Help Track Evolutionary Traits Flashcards Preview

BIO153 Midterm 1 UTM with Richter > 26.5 Molecular Clocks Help Track Evolutionary Traits > Flashcards

Flashcards in 26.5 Molecular Clocks Help Track Evolutionary Traits Deck (2)
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1
Q

What is a Molecular Clock?

A

The molecular clock is a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged.

2
Q

Fitness in biology is described as how good a particular genotype is at leaving offspring in the next generation relative to how good other genotypes are at it. Does natural selection have an effect on this?

A

No, the evolutionary change in genes and proteins has no effect on fitness, and therefore is not influences by natural selection.