4. It means that the sequence of nucleotides in one strand determines the sequence in the other strand through specific base pairing (A with T, G with C), allowing each strand to serve as a template for the other.
5. DNA replication is the biological process by which a cell makes an identical copy of its DNA before cell division, ensuring each daughter cell receives a complete set of genetic instructions.
6.
b. The DNA double helix breaks or unzips down the middle between the base pairs.
c. A complementary strand is created for each of the two strands of the original double helix.
a. The enzyme DNA polymerase moves along the exposed strands and adds complementary nucleotides to each nucleotide in each existing strand.
d. Two new identical DNA molecules have been produced.
7. True
8. False
9. False
10. In the nucleus of eukaryotic cells (or in the cytoplasm of prokaryotic cells).
11. During the S phase (synthesis phase) of the cell cycle, before cell division.
12.
Original Strand: ATGCAAATTGCTCACCGGGGATCAGCACCGG
Complementary Strand: TACGTTTAACGAGTGGCCCC TAGTCGTGGCC
Original Strand: AGGGGATCAGCACC CGGATTTCTATGAGCCTA
Complementary Strand: TCCCCTAGTCGTGGGCCTAAA GATACTCGGAT
Original Strand: AAGTACGATCGATGCACATGCATGCTCATCGC
Complementary Strand: TTCATGCTAGCTACGTGTACGTACGAGTAGCG
When a cell copies a DNA molecule:
1. DNA is unzipped, by helicase
2. The complementary bases are added to each template strand, by DNA polymerase
3. The 2 new strands are proofread for errors, by DNA polymerase and then DNA winds up.
Parent Tip: Review the logic above to help your child master the concept of dna replication activity worksheet.
