BIO BEYOND GENETIC REPLICATION EXAM
SCRIPT 2026 FULL SOLUTIONS VERIFIED
CORRECT RESPONSES HIGH SCORING
◉ What is the significance of the antiparallel arrangement of DNA
strands?
Answer: It allows the nitrogenous bases of opposite strands to fit
together in pairs.
◉ What type of bonds hold the base pairs together in DNA?
Answer: Hydrogen bonds.
◉ What hypothesis did Watson and Crick propose about DNA
replication?
Answer: Existing DNA strands serve as templates for the production
of new strands.
◉ What are the three hypotheses proposed for DNA replication?
Answer: Semiconservative, conservative, and dispersive replication.
◉ What did Meselson and Stahl's experiment demonstrate?
, Answer: It supported the semiconservative model of DNA
replication.
◉ What are the two main steps in DNA replication?
Answer: Separation of the double helix and hydrogen bonding of
nucleotides with complementary bases.
◉ What is the role of helicase in DNA replication?
Answer: It catalyzes the breaking of hydrogen bonds between the
two DNA strands.
◉ How do bacterial and eukaryotic chromosomes differ in terms of
origins of replication?
Answer: Bacterial chromosomes have a single origin, while
eukaryotic chromosomes have multiple origins.
◉ What is a replication bubble?
Answer: A structure formed during DNA replication that contains
two opposing replication forks.
◉ What is the function of DNA polymerases during replication?
Answer: They add nucleotides to the growing DNA strand according
to complementary base pairing.
SCRIPT 2026 FULL SOLUTIONS VERIFIED
CORRECT RESPONSES HIGH SCORING
◉ What is the significance of the antiparallel arrangement of DNA
strands?
Answer: It allows the nitrogenous bases of opposite strands to fit
together in pairs.
◉ What type of bonds hold the base pairs together in DNA?
Answer: Hydrogen bonds.
◉ What hypothesis did Watson and Crick propose about DNA
replication?
Answer: Existing DNA strands serve as templates for the production
of new strands.
◉ What are the three hypotheses proposed for DNA replication?
Answer: Semiconservative, conservative, and dispersive replication.
◉ What did Meselson and Stahl's experiment demonstrate?
, Answer: It supported the semiconservative model of DNA
replication.
◉ What are the two main steps in DNA replication?
Answer: Separation of the double helix and hydrogen bonding of
nucleotides with complementary bases.
◉ What is the role of helicase in DNA replication?
Answer: It catalyzes the breaking of hydrogen bonds between the
two DNA strands.
◉ How do bacterial and eukaryotic chromosomes differ in terms of
origins of replication?
Answer: Bacterial chromosomes have a single origin, while
eukaryotic chromosomes have multiple origins.
◉ What is a replication bubble?
Answer: A structure formed during DNA replication that contains
two opposing replication forks.
◉ What is the function of DNA polymerases during replication?
Answer: They add nucleotides to the growing DNA strand according
to complementary base pairing.
