mutagen
these are all mutagenic agents:-ultraviolet radiation from sunlight -free radicals that are formed as by-products of aerobic respiration -aflatoxins that are found in moldy grains
X rays
A change in the nucleotide sequence of DNA is called a mutation.
A change in the nucleotide sequence of DNA is called a mutation.
What is a physical or chemical agent that changes the nucleotide sequence of DNA?
Yes, a point mutation can cause a change in one single nucleotide in a DNA sequence.
No, a mutagen is an agent (usually a chemical) that mutates DNA. It can cause an abnormal DNA sequence in a gene or elsewhere
it could change the entire dna structure, and cause deformations
Mutagens cause a change in DNA and by this way they can produce mutant DNA repair enzymes.
Mutagens cause a change in DNA and by this way they can produce mutant DNA repair enzymes.
Most common mutagens:Ionizing radiation such as xrays, gamma rays and alpha particlesUltraviolet (tanning beds)Intercalating agentsBenzeneChemical spills
dna in a cell needs protein and chromosomes.