Mutations

Key Questions

• What is a mutation?

  Answer:

  A change in the genetic structure of an organism.

  Explanation:

  Usually, a mutation has to be expressed as some macro-functional characteristic although some may be hidden in internal systems.

  SCooke · 1 · Mar 14 2018
• How do mutations affect the traits of an animal?

  Usually there are three ways in which a mutation can affect a trait of an animal; mutation effects can be

  A) neutral, that is, the mutation doesn't cause any change;

  B) negative, where the change caused by the mutation can be detrimental for the animal;

  C) positive, where the change caused by the mutation can give an advantage to the animal.

  The last two effects play a major role in evolution; when the mutation causes a positive effect, there is an increased probability that the animal (or the plant) will reproduce and pass it to their offspring (their fitness is increased). When the mutation has a negative effect, the probability of survival and reproduction of the animal is reduced (their fitness is reduced), and consequently it will be likely that this mutation will be negatively selected, thus disappearing from the population.
  

  Pierfrancesco S. · 9 · Apr 15 2015

• Why are somatic mutations irrelevant in evolution?
• How do mutations affect the traits of an animal?
• How are mutations important to evolution?
• What are germ cell mutations?
• What is a mutation?
• What are some examples of loss of function mutations?
• How do point mutations affect the synthesis of proteins?
• What are missense mutations?
• What are some examples of deletion mutations?
• Question #84638
• Question #323a4
• What is the relationship between mutation, natural selection, and adaptation?
• What term describes a mutation that affects every amino acid that comes after it?
• What can cause mutations?
• How do alkylating agents cause mutations?
• What kind of mutation is more Iikely to result in a nonfunctional protein, a frameshift (resulting from an insertion or deletion) or a point mutation?
• Why are chromosome mutations potentially more dangerous than gene mutations?
• A geneticist found that a particular mutation had no effect on the protein coded by a gene. What do you think is the most likely type of mutation in this gene? Why?
• Which two types of biomolecules are affected by a mutation?
• Which type of mutation is responsible for sickle cell anemia?
• What are the three types of point (gene) mutations?
• Question #4e0bf
• What are some examples of gene mutations?
• What are the two types of DNA mutations?
• Are all mutations deadly?
• How does radiation cause mutation?
• How often do mutations occur?
• Why are most random mutations bad?
• How does a mutation happen?
• How do mutations create new traits?
• What are some examples of recent, beneficial mutations in humans?
• Can a point mutation be inherited?
• How would you explain how mutations in the DNA sequence of a gene may or may not affect the gene expression of the sequence of amino acids in an encoded protein?
• What type of mutation is caused by an insertion or deletion of a base and results in a change of the entire sequence after the point of insertion or deletion?
• A gene has the base sequence CGT AT. What is an example of a frameshift mutation on this gene?
• Question #cc183
• Can mutations have a positive effect?
• How does a deletion mutation differ from a substitution mutation?
• Why would frameshift mutation have a larger impact than a substitution mutation on the organism in which the mutation occurred?
• Question #8ae44
• How can mutations affect genetic equilibrium?
• What is a frame shift mutation?
• A new mutation in mice causes the coat to be twice as thick as normal. In what environments would this mutation be helpful? Why?
• Why do mutations in genes affect traits?
• Industrial melanism is a much discussed topic in evolution. Is it in any way associated with mutation?
• Are all mutations in DNA passed on to offspring?
• What is the result of a mutation during meiosis?
• What best describes genetic mutations?
• What would be considered a chemical mutagen?
• Which is a point mutation?
• A frameshift mutation occurs in a sex cell of an adult otter The is found on gene that produces proteins used to build bones. What describes the most likely effect of this mutation?
• Which type mutation will affect the largest number of proteins produced by an of organism?
• What type of mutation will not affect the protein produced?
• Which type of mutation causes Down syndrome?
• Mutations in how many genes cause the symptoms of cystic fibrosis?
• How could a mutation in DNA affect an expressed trait of an individual organism?
• How do mutations affect an organism?
• Selection pressure may result in appearance of mutations: is it true or false?
• How does mutation help organisms in the process of evolution?
• Question #1b30b
• Question #5dd2d
• Question #69248
• Question #34ee7
• How can a frame-shift mutation affect protein synthesis?
• Question #4b90b
• Question #fed91
• What are the causes of mutation?
• Question #4ab34
• What environmental factors can cause mutations?
• Why does a mutation in a sex cell have potential for great effect?
• What is an insertion mutation?
• What is frameshift mutation?
• During DNA replication the original strand (ATTCGCGATTTA) and was replicated as (ATTCGGATTTA). What type of mutation is present?
• Why does a mutation in a sperm or egg cell have different consequences than one in a heart cell?
• A point mutation in the beta-globin gene changing the codon from glutamate to Lysine will likely cause what disease?
• Question #73653
• Are genetic mutations bad?
• Question #bb6fc
• Question #28f32
• Why are insertion and deletions known as "frameshift mutations?"?
• Question #95d49
• A mutation occurred in the middle of a DNA sequence from the coding strand as shown by the partial sequence below. Determine the molecular impact of this mutation and explain the possible effects resulting from this mutation. Please be specific on this?
• What is mutation?
• Question #3d2f1
• Can a hybrid be a mutation? If we check the DNA of any organism, excepting clones, aren't all individual organisms unique? Do mutations occur all the time in sexual reproduction? Basically is variation a "slight" mutation?
• A mutation can affect which of the following..?
• Differentiate between addition and deletion mutations?