26.5 Molecular Clocks Help Track Evolutionary Traits Flashcards
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.
