WORD BANK
-S -new -thymine (T) -hydrogen -original
-replication -helicase -identical -nucleotides -cytosine (C)
The process of making a copy of DNA is called DNA ________ and it occurs during phase of interphase. Before replication can begin, the double helix must unwind. After being unwound, the DNA strands are separated by the enzyme . Helicase separates the DNA molecule by breaking the________ bonds between the nitrogen bases. With the DNA strands separated, DNA polymerase can come in and add complementary (matching) _________ to the separated strands of DNA. When DNA polymerase passes over an adenine (A), it will attach a_________. DNA polymerase will also match _________with guanine (G). DNA polymerase will also proofread the new strands of DNA to check for mis-paired nitrogen bases. The process of DNA replication produces two _________ strands of DNA. The new DNA molecules are made of one_________ strand of DNA and one ______ strand of DNA. The new DNA molecules will wind up to return to their double helix shape and prepare for cell division.