Background radiation, radioactive atoms within DNA strands, replication errors, and random events including chemical "mistakes".
There are two main factors that cause a mutation in DNA. These factors include: the DNA fails to accurately copy itself and external influence cause a breakdown in the DNA.
sunlight, radiation, and smoking.
Yes, a point mutation can cause a change in one single nucleotide in a DNA sequence.
A genetic mutation can cause a variation, which may be harmless, or may be harmful, depending on where on the DNA molecule it occurs.
mutation: a change in the sequence of DNA to cause a unusal trait
dna in a cell needs protein and chromosomes.
dna in a cell needs protein and chromosomes.
A frameshift mutation
If we didn't have junk DNA any mutation would cause damage to essential sequences of DNA and likely kill the host. It would be to dangerous to be in the sun because uv radiation cause mutations. However most of the mutation occur in the non essentioal junk DNA thus protecting essential DNA.
Mutation occurs where one DNA nucleotide base is changed in the process of DNA replication. These mutations may or may not cause genetic disorders or other observable changes in the organism, but they play a huge role in evolution, cancer, and immune system development.
dna in a cell needs protein and chromosomes.
because if not.. it will cause DNA mutation... your features may change or worst.. it may cause cancer... because in theory.. cancer is caused by DNA mutations...