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Why do different genes have a different molecular clock rate according to the neutral theory of molecular evolution?
Wiki User
∙ 10y ago
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.
Wiki User
∙ 10y ago
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Why are only neutral mutations useful for molecular clocks?
Only neutral mutations are useful for molecular clocks because they accumulate in the DNA of different species at the same rate, while other mutations do not.
Why is water more likely to interact with ions than with neutral molecules?
because the molecular structure is a lot thicker than anything else seen on earth
What is neutral selection?
Neutral selection is the changes in a gene pool of a species that are a result of random neutral occurrences that do not give any advantage to that species. Neutral selection does not depend upon adaptation, fitness, or natural selection.If you are referring to the 'Nearly Neutral' theory of natural selection, then read on. If this is a typo for 'Natural Selection', skim down to the next paragraph. The 'Nearly Neutral' theory of evolution states that for a change to come about in the population as a whole, the new characteristic must be better than or equally good as the old characteristic for the change to occur. If, for example, a population of dog has brown eyes, and a new, mutant, blue-eyed dog arrives, then this is not going to be a worse characteristic than brown eyes. This means that the concentration of the blue-eyes in the population can go on a 'random walk' and may become the norm.Natural selection is the main idea behind evolution. Basically, it is based on several observations:1 - Some members of the species are different from other members of the species2 - Parents look like their children3 - Some characteristics will help survivalWith these in mind, it is clear that those who are better equipped will tend to survive more and pass on their characteristics to their children. That's Natural Selection.
What is the main idea behind the model of a molecular clock?
The molecular clock is used to estimate the time of occurrence of events called speciation and radiation. The molecular data used for such calculations is usually nucleotide sequence for DNA or amino acid sequences for proteins. In other words, a protein is known as a molecular clock because it changes over time.
Can selection explain the numerous small differences that molecular biologists have found between proteins and other macromolecules?
No. You even see these small differences in the same species. Could be just do to small nucleotide polymorphisms. A neutral change, such as coding for two different proteins made from amino acids doing the same job, such as two hydrophobic amino acids, would not change the function of the protein. This would make the variation invisible to natural selection.
When was The Neutral Theory of Molecular Evolution created?
The Neutral Theory of Molecular Evolution was created in 1983.
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.
Why are only neutral mutations useful for molecular clocks?
Only neutral mutations are useful for molecular clocks because they accumulate in the DNA of different species at the same rate, while other mutations do not.
Is oxygen negative neutral or positive charged?
Molecular oxygen is neutral; the ions are frequently (O)2-.
How can you detect neutral mutation on molecular level?
"Neutral" isn't a molecular-level concept. A neutral mutation is one that doesn't affect the fitness of the organism; fitness is depending on the environment. For instance, a mutation that's neutral when nutrients are plentiful might become positive or negative if a particular nutrient becomes rare.
What is the neutral theory?
Introduced by Motoo Kimura, the neutral theory states that the vast majority of evolutionary changes at the molecular level are caused by random drift of selectively neutral mutants.
How many megacoulombs of positive charge are in 1 mole of neutral molecular hydrogen gas?
There is NO net positive charge in one mole of neutral hydrogen gas because it IS neutral.
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.
What is a property of molecular compounds?
Molecular compounds are composed of neutral molecules, their electrical conductivity is generally quite poor, whether in the solid or liquid state.
What is combination of positive and neutral?
according to my calculations, i would say that the combination of these is positive. neutral is neutral.
What is neutralization theory?
Introduced by Motoo Kimura, the neutral theory states that the vast majority of evolutionary changes at the molecular level are caused by random drift of selectively neutral mutants.
In molecular compounds are the total number of positive charges equal to the total number of electrical charges?
yes. molecular compound is neutral. if a compound has charges, that's known as ionic compound.
