Select all that applySelect all of the following that are true about molecular clocks.Multiple select question.They use the mutation rate of genes to determine the time of divergence from a common ancestor.They can be used to predict when new species are going to form in the future.They can be used to estimate when humans and chimps diverged from a common ancestor.They can be used in absolute dating of fossils.
Question
Select all that applySelect all of the following that are true about molecular clocks.Multiple select question.They use the mutation rate of genes to determine the time of divergence from a common ancestor.They can be used to predict when new species are going to form in the future.They can be used to estimate when humans and chimps diverged from a common ancestor.They can be used in absolute dating of fossils.
Solution
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They use the mutation rate of genes to determine the time of divergence from a common ancestor: True. Molecular clocks use the rate at which mutations accumulate in certain genes to estimate the time of divergence from a common ancestor.
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They can be used to predict when new species are going to form in the future: False. Molecular clocks can't predict future speciation events. They are used to estimate the time of past divergence events.
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They can be used to estimate when humans and chimps diverged from a common ancestor: True. This is one of the applications of molecular clocks. By comparing the genetic differences between humans and chimps, scientists can estimate when these two species diverged from a common ancestor.
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They can be used in absolute dating of fossils: False. Molecular clocks are not used in absolute dating of fossils. Absolute dating of fossils is typically done using radiometric dating techniques, which rely on the decay of radioactive isotopes, not on genetic mutations.
Similar Questions
Why is the use of a molecular clock controversial?Multiple choice question.It is only useful in some species.It assumes that rates of evolution are different for different genes.It assumes that DNA divergence rates are constant over time.It does not incorporate information from the fossil record about the timing of evolutionary events.
A(n) clock uses differences in DNA to determine when organisms diverged from a common ancestor.
Why is mtDNA referred to as a molecular clock?2018 Atomi QuestionA(Choice A)It replicates in synchrony with the cell cycleB(Choice B)We use it to estimate the age of individualsC(Choice C)Alterations in mtDNA occur irregularlyD(Choice D)We use it to estimate the date that different species diverged
The Molecular Clock through evolution is determined by the rate of mutation and the degree of purifying selection. The Clock runs slower in what parts of the genome? Exons Polyadenylation sequences Introns 5' untranslated regions Long-repetitive sequences
3. Apply the molecular clock concept to the data in the table below. Explain which of the three species in the table shared the most recent common ancestor with the human species.SpeciesPercent of DNA that is the Same as Human DNAThink CriticallyCompare and contrast relative and absolute dating.How did scientists use fossils to solve the mystery of whale evolution?
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