| A | B |
| transformation | process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria |
| bacteriophage | kind of virus that infects bacteria |
| base pairing | principle that bonds in DNA can form only between adenine and thymine adn between guanine and cytosine |
| replication | process of copying DNA prior to cell division |
| DNA polymerase | principle enzyme involved in DNA replication |
| telomere | repetitive DNA at teh end of a eukaryotic chromosome |