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Mutation serves up the variation in morphology and behavior that natural selection promotes, against the immediate environment, to better survival and, most especially, reproductive success. The organism that is selected thus has more progeny than it's conspecifics and changes the allele frequency in it's population of organisms, and this is evolution,
What else can I help you with?
Can mutation beneficial?
Yes mutations are the basis of evolution as they provide variance in the phenotype that could have evolutionary advantages
Why do mutations that occur in the skin or nervous system tend to have little effect on the evolution of a species?
Most mutations that occur have a neutral effect, or none at all, so they would not affect evolution. Organisms with mutations that cause detrimental impact typically will not survive; therefore, they will not reproduce, and the mutation will not be passed on, so the species will not be affected overall. Beneficial mutations are typically the only mutations that will affect an organism's posterity and the evolution of its species, but good mutations are very rare. This is why most mutations have little effect on the evolution of a species.
How does genetic variation and mutations relate to each other?
mutation brings about variation which is the basis of evolution and the two types of variation are heritable and non-heritable
Can mutations result from a need?
No! This was a failed theory. Mutations always occur on a random basis ... the result of which is that most of them are down-right bad for the organism. (Remember, evolution is "directed" by death - NOT the survival of the fittest as is often stated.)
How can Darwinain evolution be true if more than 99 percent of genetic mutations are retrogressive?
Darwinian evolution works very slowly over hundreds of generations. Though 99percent of mutations may be lost through natural selection the remaining 1 percent positive mutations will eventually, given sufficient time, improve the fit of the species to it's environment.
If genetic mutation almost always leads to sterilization and death then how can evolution be true?
Genetic mutation does not always lead to sterilization as you point out. This however is not the way evolution happens. Evolution occurs mainly through small adaptive changes over a long period of time that are not mutations. Evolution does not happen suddenly.
Is evolution good or bad?
Genetic mutations can be good or bad, but evolution refers specifically to those mutations that make an organism better able to survive and to perpetuate their species, which makes them generally a good thing.
Mutations that occur in skin or lung cells have little effect on the evolution of a species because mutations in these cells?
cannot be passed on to offspring
What is a mutation and how does it relate to evolution?
A mutation is a change in the DNA sequence of an organism. Mutations are sources of genetic variation, and they can drive evolution by introducing new traits that may be advantageous, neutral, or harmful in different environments. Over time, beneficial mutations can be selected for, leading to changes in the population and contributing to the process of evolution.
How do DNA mutations impact genetic diversity and evolution?
DNA mutations impact genetic diversity and evolution by introducing new genetic variations into a population. These mutations can lead to changes in traits and characteristics, which can be beneficial, harmful, or neutral. Over time, these variations can be selected for or against through natural selection, influencing the overall genetic makeup of a population and driving evolution.
Evaluate the significance of mutations and repair of mutations to the evolution of sexual reproduction?
Mutations are vital for introducing genetic variation in populations, a key aspect of evolutionary change in sexual reproduction. Repair mechanisms help maintain genetic integrity and prevent harmful mutations from accumulating, ensuring the survival of organisms. Overall, mutations drive adaptation and evolution in sexual reproduction by creating diversity, while repair mechanisms act as safeguards to preserve the genetic integrity of the population.
What is the ultimatesource of genetic variation and the basis for the diversity of life on earth?
Mutations, combined with the fact that some of those mutations actually survive.
