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What is the role of gene and gene mutations in the development of new species?
Wiki User
∙ 11y ago
The role of the gene, simply put, is to replicate itself without making mistakes. Mutations are when the gene makes mistakes. Geneticists tell us that each generation has over 100 mutations than the previous generation. In other words, you have 100 more mutations than your parents, and your parents have 100 more mutations than their parents, and so on. As far as new species, you should look at Mendel's experiments with peas. He bred the colors out until they no longer able to pass on a particular color that was there in the original pea. The same hold true with dogs, or other animals like horses. You start out with a dog that has genes for long, short, and medium hair; as well as a variety of colors such as brown, black, and white. You breed the dogs until you get the black and brown out and you are left with an all white dog. You do the same with the long hair, medium hair, and short hair. When you get a dog that repeats the same color for several generations, you can feel confident that the other traits are gone. Then you can call that a 'Pure Bred' dog with some new dog name such as Samoyed. No new information has ever entered into the animal, it just lost information and it will never return unless, it is mated with another dog that has the original information. The same goes with the horse, zebra, donkey, etc. Information was separated out and you end up with various color blends, sizes, etc. New species are formed by losing information. There has never been a gain of information that never existed before that just popped up in any species.
Andy
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoGenes determine the phenotype of an organism as they control expression of traits . Gene mutation is basic source of variation in any species .Heritable mutation occur at time of gamete formation during meiosis . Rate of mutation may vary depending upon environmental factors . accumulation of mutations slowly changes a population . other forces of evolution specially selection acts on variations and produces new species in very long time . There are some other mechanisms of evolution also.
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What is the function of the KRAS gene?
The K-ras (perhaps sometimes called the KRAS) gene is an oncogene which activates mutations that will play a key role in diseases such as lung, colorectal, and pancreatic cancer.
Are there any gentic mutations compatible with life?
To function correctly, each cell depends on thousands of proteins to do their jobs in the right places at the right times. Sometimes, gene mutations prevent one or more of these proteins from working properly. By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. A very small percentage of all mutations actually have a positive effect. These mutations lead to new versions of proteins that help an organism and its future generations better adapt to changes in their environment. For example, a beneficial mutation could result in a protein that protects the organism from a new strain of bacteria.
What are three main ways that variations in genotype arise in population?
Variations occur due to mutations. There are three factors of mutations which impact the formation of new genotypes. 1) Point Mutations - Very small impact mutation which still might enhance the protection against environment and reproduction. 2) Mutations that alter Gene number and sequence - has major role in evolution as it might help to add new functions. 3) Mutation Rates - In animals and plants mostly very slow, however, prokaryotes due to high rate are able to mutate very fast.
Are mutations also adaptations?
Adaptation is when a species changes in order to better survive in it's environment. Mutations be inherited or aquired sometime during their life. The difference between a mutation and an adaption is that adaptions are always bettering the organism. Mutations can be benign, harmful, or helpful to an organism. New species are started when a mutation occurs, and through natural selection, the species thrives.In molecular Biology and genetics, mutations are changes in a genomic sequence: the DNA sequence of a cell's genome or the DNA or RNA sequence of a virus. These random sequences can be defined as sudden and spontaneous changes in the cell. Mutations are caused by radiation, viruses, transposons and mutagenic chemicals, as well as errors that occur duringmeiosis or DNA replication. They can also be induced by the organism itself, by cellular processes such ashypermutation.Mutation can result in several different types of change in sequences; these can either have no effect, alter the product of a gene, or prevent the gene from functioning properly or completely. One study on genetic variations between different species ofDrosophila suggests that if a mutation changes a protein produced by a gene, the result is likely to be harmful, with an estimated 70 percent of amino acid polymorphisms having damaging effects, and the remainder being either neutral or weakly beneficial.[4] Due to the damaging effects that mutations can have on genes, organisms have mechanisms such as DNA repairto prevent mutations.[1]An adaptation in biology is a trait with a current functional role in the life history of an organism that is maintained and evolved by means of natural selection. An adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation. Adaptations contribute to the fitness and survival of individuals. Organisms face a succession of environmental challenges as they grow and develop and are equipped with an adaptive plasticity as the phenotype of traits develop in response to the imposed conditions. The developmental norm of reaction for any given trait is essential to the correction of adaptation as it affords a kind of biological insurance or resilience to varying environments.
Testis-determining factor is found in or on?
Testis-determining factor (TDF) is found on the Y chromosome of mammals. It is a gene called SRY (sex-determining region Y) that plays a crucial role in the development of testes and the determination of male sex characteristics.
How can a virus play an active role in the evolution of their host species?
Inter-species gene transfer.
What is the function of the KRAS gene?
The K-ras (perhaps sometimes called the KRAS) gene is an oncogene which activates mutations that will play a key role in diseases such as lung, colorectal, and pancreatic cancer.
What gene causes ataxia-telangiectasia?
mutations in a single large gene were identified as causing A-T. Researchers named the gene ATM for A-T, mutated. Subsequent research revealed that ATM has a significant role in regulating cell division
What is the function of the FMR-1 gene?
This gene is located on the X chromosome. The FMR-1 gene is thought to play an important role in the development of the brain, but the exact way that the gene acts in the body is not fully understood.
How does chance play a role in evolution?
Evolution is caused by adaptations (favorable traits) that sometimes come from mutations. Mutations happen by chance, and this is how chance plays a role in evolution.
What role does the ARSE gene play in the human body?
The ARSE gene (also known as: "Arylsulfatase E", with its symbols "ASE", "CDPX", "CDPX1" or "CDPXR") is linked to the development of both bones and cartilage in the human body.
What role does genetics play in the diversity of a species?
Genetic mutations overtime can have a great deal of effects on population over time, DNA can mutate to fight off certain disease's or they could even cause the human body not to be able to fight off certain disease's
What role does p53 have in controlling cell division?
Cell division is regulated by the p53 gene and relates to cancer because Cancer is caused by uncontrolled cell divison
Why does Ecuador have endangered species?
Because of traditional farming practices but mostly oil development has played the biggest role in the clearing of forests.
Are there any gentic mutations compatible with life?
To function correctly, each cell depends on thousands of proteins to do their jobs in the right places at the right times. Sometimes, gene mutations prevent one or more of these proteins from working properly. By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. A very small percentage of all mutations actually have a positive effect. These mutations lead to new versions of proteins that help an organism and its future generations better adapt to changes in their environment. For example, a beneficial mutation could result in a protein that protects the organism from a new strain of bacteria.
Role of science in development of India?
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What is the role to save vulnerable species?
Saving vulnerable species is a role.
