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Mutations occur because there are many things that can cause random changes in the nucleotides of the DNA or RNA: e.g. radioactivity, UV light, free radicals, accidental copying errors. Eukaryotic organisms have a variety of repair mechanisms to correct these random errors, but even those repair mechanisms are not perfect and sometimes mutate a mutation accidentally instead of repairing it. Nothing is perfect.
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoMutation occurs when the DNA in the gonads or gametes of a given organism is altered by radiation, or by mutagenic chemicals, or by any other process.
Wiki User
∙ 12y agoThe main reasons are:
Errors by DNA polymerase during replication
Chemical mutagens
Radiation
Wiki User
∙ 11y agoA change in the base sequence in DNA.
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What are known as gene mutations and occur at a single point in the DNA sequence?
Mutations that occur at a single point in the DNA sequence are Point Mutations.
Why does variation occurs?
Variation occurs because of mutations in the genetic code.Mutaions occur when one of the nitrogen bases are in the wrong spot like if aa is next to each other in the wrong sequence then the mutations occur
Why is the rate at which mutations occur rather slow?
Evolution is incredibly slow because: - Changes can only occur in each successive generation - Helpful mutations occur only rarely - Situations where different adaptations are necessary are rare
Can mutations occur in jellyfish?
Mutations happen in ALL living things (and also in viruses)!!!!!!
Is it true that only mutations in gametes can be passed from parent to offspring?
Gametic mutations occur in the cells of the gonads (which produce sperm and eggs) and may be inherited. There are two types of mutations that can occur in gamete cells: 1. Gene Mutations 2. Chromosomal Mutations
Mutations occur because of?
errors in DNA replication
Mutations that occur at random are called?
Mutations that occur at random are called spontaneous mutations.
What are known as gene mutations and occur at a single point in the DNA sequence?
Mutations that occur at a single point in the DNA sequence are Point Mutations.
Why do chromosome mutations occur most often during nuclear divisions?
Chromosome mutations occur during nuclear division because when the sequence of nucleotides are being placed substitutions, and frameshifts can occur, causing mutations. Substitution is when one nucleotide replaces another and frameshift mutation is when a nucleotide deletes, causing codons to be incorrectly read.
Mutations that occur in skin or lung cells have little effect on the evolution of a species because mutations in these cells?
cannot be passed on to offspring
Why does variation occurs?
Variation occurs because of mutations in the genetic code.Mutaions occur when one of the nitrogen bases are in the wrong spot like if aa is next to each other in the wrong sequence then the mutations occur
Mutations in DNA often occur during replication During which phase of the cell cycle do such mutations occur?
Interphase
Why is the rate at which mutations occur rather slow?
Evolution is incredibly slow because: - Changes can only occur in each successive generation - Helpful mutations occur only rarely - Situations where different adaptations are necessary are rare
Can mutations occur in jellyfish?
Mutations happen in ALL living things (and also in viruses)!!!!!!
What are mutations that occur at a single point?
Such mutations are called point mutation or gene mutation.
Are mutations in the DNA sequence gene transient changes?
Successful mutations will persist. Mutations usually occur during replication. Some mutations will flourish depending on environmental factors.
What is a facets of life?
Mutations that occur in DNA
