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No, because of the redundancy in the genetic code (several base triplets or codons code for the same amino acid) a point mutation, for instance, (a change in one base) may have no effect on the amino acid sequence in the protein, and so no effect on the expressed phenotype.

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Q: Do mutations always cause pheynotypic changes?
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Related questions

What can cause changes in DNA sequences?

mutations


What is the process that cause changes in plant an animal cells?

Mutations cause changes in plant an animal cells.


What do mutations cause in genotype and phenotype?

They cause changes or more technically alterations.


Can mutations cause changes in DNA sequences?

mutations


Why aren't all mutations bad?

Mutations are unnatural changes in the body or behavior. They are not always bad. For instance, the skin of the poison tree frog is not really bad at all. It rubs itself on poison leaves and mutated itself not to be affected.


What is one way that changes occur in a DNA Sequence?

Mutations (point mutations, inversions, translocations...) cause changes in DNA Simply stated, a mistake made while DNA copies causes changes in DNA.


What is one way that can occur in a DNA sequence?

Mutations (point mutations, inversions, translocations...) cause changes in DNA Simply stated, a mistake made while DNA copies causes changes in DNA.


How does chemestry affect cancer?

Chemicals that do not cause cancer by themselves but can act with another chemical to cause cancer (cocarcinogens). Damage to DNA in cells can lead to cancer. ... Unrepaired DNA damage can lead to mutations, or changes, in genes, and mutations in certain genes can cause cancer. You can also inherit mutations.


Mutations that cause dramatic changes in protein structure are often?

your mom is what causes the answer, Frameshift mutation.


What best explains why mutations cannot cause evolution?

Biology has catalogued many traits produced by point mutations (changes at precise positions in an organism's DNA)--bacterial resistance to antibiotics, for example.To say otherwise is incorrect.But mutations do cause evolution. Biology has catalogued many traits produced by point mutations (changes at precise positions in an organism's DNA)--bacterial resistance to antibiotics, for example.To say otherwise is incorrect.


What is one way that changes can occur in a DNA sequence?

A radioactive carbon isotope can "convert" ... changing the chemistry of a codon.


How do mutations relate to traits?

Mutations cause certain traits.