recombine -
cause genetic recombination; "should scientists recombine DNA?"
modify,
alter,
change make less severe or harsh or extreme; "please modify this letter to make it more polite"; "he modified his views on same-gender marriage"
recombine -
undergo genetic recombination; "The DNA can recombine"
change undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"