What is gene mutation?

Answers:
A gene mutation is a change surrounded by the sequence and/ or structure in the DNA responsible for a biological workings in an organism. The middle dogma of biology states that DNA gets turned into RNA, and RNA get turned into amino acid chains call proteins. And proteins are what organisms are primarily is made out of. The specificity of the sequence of amino acids determines what kind of protein it will become. That specificity comes from the sequence of RNA, which contained by turn came from the DNA.

Everyday, organisms are hit near mutagens (agents that physically change DNA) from a mixture of sources (i.e. UV light, radioactive materials, and cigarette smoke to heading a few). When these mutagens come in contact near living cells, the DNA can physically break or create unexpected bonds between atoms in the DNA. This process can result contained by a different nucleic acid at that position, a deletion, or even an insertion of a fresh nucleic acid. DNA sequence is changed, RNA is changed, and proteins are changed.

Furthermore, a cytosine (the C of DNA) that have been methylated (a carbon group attached to it) can spontaneously silver to a thymine (the T in DNA) through a process call deamination. Gradually over time, genomes can lose their cytosines if those cytosines are not evolutionarily important.

Gene mutations can also come from DNA change that occur within regions that do not code for RNA. There are regulatory regions in DNA that describe the RNA making machinery when, where, and how to get RNA. Any changes within those pieces of DNA can also affect how a protein is expressed.

So how does life preserve living with the constant bombardment of mutagens? Over time, life span has evolved mechanims and redundancies that lessen and fix the tattered caused by mutagens.

Most gene mutations result surrounded by negative effects. With ample DNA changes cancer can develop because some genes have be shut down, while others have be expressed more than normal.

However, once within a while mutations can prove to be beneficial. Take for example the gene lactase. Lactase helps break down lactose which is found surrounded by milk. When lactase is present, we are getting the most nutrition out of milk. All infants express lactase, which makes sense because we are growing speedily at that time and need adjectives the nutrition we can get. However, as we go and get older, the lactase gene shuts itself stale because we do not depend on our mother's milk, and become lactose intolerant. Some people own a mutation that causes the lactase gene to be expressed at adjectives times, even as adults and thus they can always find the most nutrition out of milk. This would be very beneficial for precipitate farmers because a poor crop could be supplemented by cow's milk.

A change within the amino acid sequence within DNA.

It is when a gene that is passed down from both parents get mutated or changed into something differerent in a child. For example, a mother have blue eyes, an father has green, and the child ends up near brown eyes. That is a gene mutation.

when gene (simmons) of kiss would go from regular guy to the dragon man.

:D

most times it's cancer. other times.. powerfully long term mutations that may / own occurred is when the evolution of the chemical construct up of a person make them from regular WWF wrestler to dashing up and coming entrepreneur.

There are many, lots different types of gene mutations, but typically they are simply a slight difference in the DNA. These differences can result contained by various physical differences or other disorders. I.E. Down syndrome, kleinfeilder's syndrome, the "elephant disease", and several others.

check this out
http://ghr.nlm.nih.gov/handbook/mutation.

A mutation in the DNA of a gene, as challenging a mutation in a bit of "junk" DNA.

Gene mutation is a change contained by the nucleotide base of and genetic sequence. There are lots types of gene mutation. Some of them include base substitution, deletion, enclosure, inversion.

Depending upon the condition, The genetic mutation may not cause a shift within the reading frame of the gene and the resultant protein translated will still be relatively similar. However, if the gene mutation results in a frameshift, after any change within the reading frame of the gene during protein synthesis will produce a non-functional protein.

Please see the webpage for more details on Gene Mutation.

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What is gene mutation?

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