⚙️ how
How do mutations happen in DNA?
Human BiologyGenetics
Quick Answer
Mutations happen when DNA is copied incorrectly or damaged by things like radiation, chemicals, or natural cell processes. Most are harmless, but some can affect health or evolution.
The Full Story
DNA mutations can arise during cell division when copying errors slip past repair systems. They can also be caused by ultraviolet light, ionizing radiation, certain chemicals, or damage from normal metabolic byproducts inside cells. Mutations may involve a single letter change, a missing piece of DNA, or a larger rearrangement. Many mutations do nothing noticeable, but some can cause disease or provide variation that natural selection can act on.
Key Facts
1.UV light and ionizing radiation can damage DNA
2.Mutations can be single-letter changes or large rearrangements
3.Most mutations are neutral or harmless
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Suggested video title for this topic:
"Where mutations come from—and why most of them do nothing."