The molecular clock hypothesis uses mutation rates and fossil evidence to determine when species diverged. It examines the accumulation of differences in DNA and amino acid sequences over time. Mitochondrial DNA mutates more quickly than nuclear DNA, allowing molecular clocks to deduce older divergence times for apes, humans and other primates based on mitochondrial sequences and estimates of phylogenetic branch lengths. Long generation times mean the molecular clock ticks slowly, resulting in slower mutation rates and less stress on ancient populations.
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According to Hawk mtDNA is mitochondrial DNA molecular clock is .pdf
1. According to Hawk mtDNA is mitochondrial DNA "molecular clock" is a technique that uses
the mutation rate of biomolecules to deduce the time in prehistory when two ormore life forms
are diverged. The biomolecular data used for this is usually nucleotide sequence for DNA or
amino acid sequence for aminoacid.
The molecular clock hypothesis is a technique in molecular evolution that uses fossil
constraintsand rates of molecular change to deduce the time in geologic history when two species
are diverged. Divergent evolution is the accumulation of differences between groups which can
lead to the fomation on new species, usually difusion of same species to different environment
allowing differentiated fixation of characteristics.
Long generation with few mutations in each, with few means the clock of geneticsubstitution has
ticked very slowly for apes and humans A longer time scale has many consequences. It causes
slower mutation rates and breathing easier in ancient population.
Mitochondrial mutation occurs much more often than nuclear DNA mutations. Our estimate of
mtDNA substitution rates depends on our estimates of branch lengthsof primate phylogeny
Solution
According to Hawk mtDNA is mitochondrial DNA "molecular clock" is a technique that uses
the mutation rate of biomolecules to deduce the time in prehistory when two ormore life forms
are diverged. The biomolecular data used for this is usually nucleotide sequence for DNA or
amino acid sequence for aminoacid.
The molecular clock hypothesis is a technique in molecular evolution that uses fossil
constraintsand rates of molecular change to deduce the time in geologic history when two species
are diverged. Divergent evolution is the accumulation of differences between groups which can
lead to the fomation on new species, usually difusion of same species to different environment
allowing differentiated fixation of characteristics.
Long generation with few mutations in each, with few means the clock of geneticsubstitution has
ticked very slowly for apes and humans A longer time scale has many consequences. It causes
slower mutation rates and breathing easier in ancient population.
Mitochondrial mutation occurs much more often than nuclear DNA mutations. Our estimate of
mtDNA substitution rates depends on our estimates of branch lengthsof primate phylogeny