110,311
edits
No edit summary |
No edit summary |
||
Line 2: | Line 2: | ||
A '''mutation''' is any spontaneous heritable change in [[DNA]] sequence that contributes to [[genetic variability]]. It results from 2 possible mechanisms. | A '''mutation''' is any spontaneous heritable change in [[DNA]] sequence that contributes to [[genetic variability]]. It results from 2 possible mechanisms. | ||
# Cellular accidents during processes like replication, recombination, or transposition. | # Cellular accidents during processes like [[DNA replication|replication]], [[genetic recombination|recombination]], or [[transposon|transposition]]. | ||
# Exposures to foreign mutagens, such as chemicals or ultra violet rays. | # Exposures to foreign mutagens, such as chemicals or ultra violet rays. | ||