S phase of interphase where the DNA replication takes place.
Answer is a. neolithic where they use wild and domesticated crops and domesticated animals
<span>All are mutagenic because they cause base substitutions, deaminating agents oxidatively deaminate bases so cytosine converted to uracil and adenine converted to hypoxanthine, uracil pairs with adenine and hypoxanthine pairs with cytosine, alkylating agents donate alkyl group to amino or keto groups altering base pair affinities</span>
The correct answer is "All of the above are correct"