BIO BEYOND GENETIC REPLICATION 2026
GENETICS AND HEREDITY REVIEW QUESTIONS
ANSWERS VERIFIED GUIDE
◉ helicase, primase, DNA polymerase III, DNA polymerase I, ligase.
Answer: For a single round of DNA synthesis on the leading strand,
place the activity of the enzymes IN ORDER in terms of when they
act in the sequence of making a new DNA molecule from a template.
◉ 25.
Answer: An extraterrestrial life form is discovered. It has a genetic
code much like that of organisms on Earth except that there are five
different DNA bases instead of four and the base sequences are
translated as doublets instead of triplets. How many different amino
acids could be accommodated by this genetic code?
◉ ACU.
Answer: A particular triplet of bases in the template strand of DNA is
AGT. What is the corresponding codon for the mRNA transcribed?
◉ UUC.
Answer: What anticodon(s) would you predict to find on the tRNA
linked to the amino acid glutamate?
, ◉ C. RNA polymerase binds to the promoter region to begin
transcription..
Answer: Which of the following is true for both prokaryotic and
eukaryotic gene expression?
A. After transcription, a 3' poly-A tail and a 5' cap are added to
mRNA
B. Translation of mRNA begins before transcription is complete.
C. RNA polymerase binds to the promoter region to begin
transcription.
D. mRNA is synthesized in the 3' → 5' direction.
E. The mRNA transcript is the exact complement of the gene from
which it was copied.
◉ D. RNA polymerase can initiate RNA synthesis without a free 3'-
hydroyxl, but DNA polymerase requires a primer to initiate DNA
synthesis..
Answer: RNA polymerase and DNA polymerase differ in that:
A. RNA polymerase uses RNA as a template, and DNA polymerase
uses a DNA template.
B. RNA polymerase binds to single-stranded DNA, and DNA
polymerase binds to double-stranded DNA.
C. RNA polymerase is much more accurate than DNA polymerase.
GENETICS AND HEREDITY REVIEW QUESTIONS
ANSWERS VERIFIED GUIDE
◉ helicase, primase, DNA polymerase III, DNA polymerase I, ligase.
Answer: For a single round of DNA synthesis on the leading strand,
place the activity of the enzymes IN ORDER in terms of when they
act in the sequence of making a new DNA molecule from a template.
◉ 25.
Answer: An extraterrestrial life form is discovered. It has a genetic
code much like that of organisms on Earth except that there are five
different DNA bases instead of four and the base sequences are
translated as doublets instead of triplets. How many different amino
acids could be accommodated by this genetic code?
◉ ACU.
Answer: A particular triplet of bases in the template strand of DNA is
AGT. What is the corresponding codon for the mRNA transcribed?
◉ UUC.
Answer: What anticodon(s) would you predict to find on the tRNA
linked to the amino acid glutamate?
, ◉ C. RNA polymerase binds to the promoter region to begin
transcription..
Answer: Which of the following is true for both prokaryotic and
eukaryotic gene expression?
A. After transcription, a 3' poly-A tail and a 5' cap are added to
mRNA
B. Translation of mRNA begins before transcription is complete.
C. RNA polymerase binds to the promoter region to begin
transcription.
D. mRNA is synthesized in the 3' → 5' direction.
E. The mRNA transcript is the exact complement of the gene from
which it was copied.
◉ D. RNA polymerase can initiate RNA synthesis without a free 3'-
hydroyxl, but DNA polymerase requires a primer to initiate DNA
synthesis..
Answer: RNA polymerase and DNA polymerase differ in that:
A. RNA polymerase uses RNA as a template, and DNA polymerase
uses a DNA template.
B. RNA polymerase binds to single-stranded DNA, and DNA
polymerase binds to double-stranded DNA.
C. RNA polymerase is much more accurate than DNA polymerase.
