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What kind of clock does paleontologist use?

Molecular Clock


Is a molecular clock the same as a biological clock?

Yes!


What is the main idea behind the model of of a molecular clock?

The main idea behind the model of a molecular clock is that neutral mutations accumulate at a steady rate.


A model that uses DNA comparisons to estimate the length of time that two species have been evolving independently is known as a?

molecular clock


Type of clock that estimates how long species have been evolving independently?

Molecular Clock


Type of clock that estimates how long species have been envolving independently?

molecular clock.


Why do different genes have a different molecular clock rate according to the neutral theory of molecular evolution?

Different genes have different molecular clock rates due to the amount of Cytoplasmic Dyruduemion the genes contain. The more Cytoplasmic Dyruduemion the genes have, the slower the molecular clock rate, according to the neutral theory of molecular evolution.


What does a molecular clock measure.?

A molecular clock measures the rate at which genetic mutations accumulate in a species over time. By comparing differences in genetic sequences, scientists can estimate how long ago different species diverged from a common ancestor.


What does not affect the rate of mutation is a molecular clock?

A molecular clock is a method used to estimate the time of evolutionary events based on the rate of molecular changes, particularly in DNA sequences. While it provides insights into the timing of divergence between species, it does not influence the actual rate of mutation, which is determined by factors such as environmental influences, replication errors, and DNA repair mechanisms. Thus, the molecular clock is a tool for interpreting mutation rates rather than a factor that affects them.


What is a molecular clock and how it is used to show relationships?

A molecular clock is a tool used to estimate the times of speciation events based on the rate at which DNA or protein sequences accumulate changes. By comparing the genetic differences between organisms, the molecular clock can provide insights into how species are related and when they diverged from a common ancestor. This information helps construct evolutionary relationships and timelines.


What is the purpose of a molecular clock and the properties that a section of protein must have to be used in this way?

A molecular clock uses the rate of genetic mutations to estimate the timing of evolutionary events. For a section of protein to be used in a molecular clock, it must have a relatively constant mutation rate, be conserved across species, and have a known or predictable function. Additionally, it should evolve neutrally, meaning that changes in the protein do not impact the organism's fitness.


What is Kimuras Neutral Theory of Molecular Evolution?

Kimura (1968) • The vast majority of evolutionary changes at the molecular level are caused by random drift of selectively neutral mutants (not affecting fitness) ! The Molecular Clock.