What does it mean that the genetic code is “highly conserved”?

a. it is almost universal and has not changed in millions of years
b. it resists modification from environmental mutagens
c. organisms can only use it a certain number of times
d. all organisms and organelles - without exception - have the exact same genetic code
e. the products of the genetic code - proteins - are almost the same in all organisms


ANSWER: a

Biology & Microbiology

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