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Last Answer: "Never! When would it be positive? It's a DEFORMATION!!!"
That's incorrect. Without mutations, evolution could never occur. For example:
Imagine a bird with a very small mouth. The seeds it eats are very large, and many birds die of starvation. Because of a mutation, one bird's mouth is larger than any other's, and it ends up surviving, passing on that "deformed" gene to its offspring who also survive because of their large mouths.
That is just one example of how a mutation can lead to positive evolutionary changes.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoMutations, can have positive result under many circumstances. For example in a species of fish, if one of the offspring, had stronger fins, because of a mutation, it might be better suited to its environment and thus better to survive. That mutation would then be a positive one. However, there a real life examples such as the CCR5 delta 32 mutation, occurring in humans. This is the deletion of a specific gene, that impacts the t cells. Those who have this mutation (mostly from European descent) are less likely to develop HIV or for it to progress into AIDS, making it very beneficial.
Wiki User
∙ 11y agoMany mutations have led to positive changes, and continue to do so. Although mutations in the DNA of humans are almost always harmful, the history of evolution has proved that some mutations can help species to survive and adapt to their environments. An example of this are the changes that happen through natural selection, and can explain how humans developed from primitive beings to what we are today. One famous example of natural selection occurred with a species of bird, that over many years adapted into many different species with different sized beaks for eating different things so that each could survive in the new habitat with less competition.
Wiki User
∙ 12y agoYes, mutations often produce proteins with new or altered functions that can be useful to organisms in different or changing environment's.
Wiki User
∙ 13y agoAs opposed to a detrimental or neutral mutation a positive mutation is generally beneficial if it is in a germ line and is favored by natural selection.
Wiki User
∙ 11y agoYes, it is called evolution.
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The original source of genetic variation that serves as the raw material for natural selection is what?
Generally, mutation.
Serial connection definition?
This connection goes from negative 2 positive which raises the voltage. Thanks!! o.o
What are two types of mutation?
From another angle: beneficial and detrimental.
Why is mutation important to spectation?
Without mutation there can be no evolution. Without evolution there can be no speciation.
A change in the nucleotide base sequence of gene or DNA molecule is called a what?
this is called a mutation
What is a brief definition in mutation?
genetic disorder
Can anyone become a mutant by mutation?
The only way to become a mutant is via a mutation, but a mutation does not guarantee a unique phenotype. (I'm assuming, here, that you're using a biological definition of "mutant" and not a more fanciful definition.)
Definition of class 1 mutation?
Hannah Montana
What is the definition of selective reverse mutation?
It is a change in a gene that specifically selected
Is gene mutation within a species know as micro evolution?
Genetic mutation is one of the mechanisms for evolution.Micro-evolution by definition means very small changes in allele frequency (gene mutation).
In your own words write a definition for the word mutation?
mutation: a change in the sequence of DNA to cause a unusal trait
The mutation that results in sickle cell anemia produces effects that are?
Both harmful and positive
Why do you get a positive answer when multiplying two positive integers?
It follows from the definition of multiplication.
What is the definition of a positive sentence?
A positive sentence is a statement that expresses the presence of something or the truth of a situation. It does not contain negative words like "no," "not," or "never."
Can an O positive parent have a b negative child?
It is possible (by spontaneous mutation, for example) but unlikely.
Can a number be both natural and positive?
The most common definition of 'natural' numbers is: The counting numbers.According to that definition, all natural numbers are positive.
What is the word for the definition genetic change in population over time?
Long time = evolution. Short time = mutation.
