When using a molecular clock, the rate of DNA divergence between two clades per unit time can be determined by dividing Blank______.Multiple choice question.the length of time separating the clades by the total amount of DNA divergence between the two cladesthe number of bases in a DNA molecule by the length of time separating the cladesthe total amount of DNA divergence between the two clades by the length of time separating the clades

A(n) clock uses differences in DNA to determine when organisms diverged from a common ancestor.

Why is the use of a molecular clock controversial?Multiple choice question.It does not incorporate information from the fossil record about the timing of evolutionary events.It assumes that DNA divergence rates are constant over time.It is only useful in some species.It assumes that rates of evolution are different for different genes.

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.

Knowing when geological events (for example, the appearance of a new island) occurred, is useful when trying to determine Blank______.Multiple choice question.the magnitude of DNA divergence between cladesthe most parsimonious phylogenythe timing of the separation of clades

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