Causes Of Mutations Flashcards
All forms of _ are caused by mutations
Genetic variation
Mutations essential to _
Evolution of species
Internal mutations may be caused by _
Mistakes during copying
Body checks for copying errors and usually _
Mends them
Some copying errors may go undetected and can be _
Passed on to offspring
Cancer caused by mutations and some mutagens are also _
Carcinogens
Carcinogens are substances that increase risk of _
Cancer
When environmental agent enters a cell nucleus and interacts with DNA, DNA becomes
Mutated and damaged
Ionizing radiation from X-rays can
Break DNA sequence
Break DNA sequence, causing _ within chromosome
Rearrangement
Chemicals such as _ are mutagens
Hydrogen peroxide
Chemical mutagens change _
Chemistry of DNA
Somatic cells are cells other than _ (2)
Sperm
Egg
A mutation takes place in _ can lead to cancer
Somatic cells
Somatic mutation occurs when the chemical changes the _
DNA blueprint
When chemical changes the DNA blueprint, mutated cells _
Divide uncontrollably
Some _ are mutagens
STI diseases
Infectious and biological agents are (2)
Viruses
Bacteria
Viruses and bacteria can cause _
Point mutations
Helicobacter pylori is a bacteria that can cause _
Inflammation
Helicobacter pylori inflammation damages dna and impairs its _
Repair systems
