Question

Experimental Studies of Reaction Rates

Name two molecular processes and the timescales of these processes.

Answer 1

Two molecular evolutions relavant to their timescales are.

1.Microevolution or evolutionary process:

These processes occur in races,subspecies and species;at the molecular level,they amount to a change in the frequencies of molecular genotypes and phenotypes.These processes include the establishment of polymorphism,the substitution of certain alleles for others.

The timescales of these processes is determined by their charecteristic times.

Macroevolution

this process appllies to evolutionary processes occring in taxa of the rank of supraspecies composed of irreversible isolated subtaxa.These processes include speciation,divergence and convergence of species, the emergence of new genes and gene systems,macroevolutionary synonymous drift of genes.

The timescale for these processes is largely determined by their relationship to the processes of mi croevolution.The completed processes of microevolution may be viewed as the elementary events of microevolution.