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PEPTIDES CODED FOR IN DNA EXAM QUESTIONS WITH VERIFIED SOLUTIONS PEPTIDES CODED FOR IN DNA EXAM QUESTIONS WITH VERIFIED SOLUTIONS

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PEPTIDES CODED FOR IN DNA EXAM QUESTIONS WITH VERIFIED SOLUTIONS PEPTIDES CODED FOR IN DNA EXAM QUESTIONS WITH VERIFIED SOLUTIONS

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ESTUDYR


PEPTIDES CODED FOR IN DNA EXAM QUESTIONS WITH VERIFIED
SOLUTIONS PEPTIDES CODED FOR IN DNA EXAM QUESTIONS WITH
VERIFIED SOLUTIONS


UUU codes for:
A. Leucine
B. Valine
C. Phenylalanine
D. Serine
Answer: C. Rationale: UUU is one of the two codons (UUU, UUC) that encode phenylalanine in
the standard genetic code.

UUC codes for:
A. Tyrosine
B. Isoleucine
C. Phenylalanine
D. Methionine
Answer: C. Rationale: UUC is the second codon that specifies phenylalanine (synonymous with
UUU).

UCU codes for:
A. Cysteine
B. Serine
C. Proline
D. Glycine
Answer: B. Rationale: UCU is one of four serine codons (UCU, UCC, UCA, UCG) in the genetic
code.

UAU codes for:
A. Cysteine
B. Tyrosine
C. Stop
D. Histidine
Answer: B. Rationale: UAU (and UAC) encode tyrosine.

UGU codes for:
A. Tryptophan
B. Cysteine

, ESTUDYR


C. Leucine
D. Serine
Answer: B. Rationale: UGU and UGC specify cysteine.

UUA codes for:
A. Isoleucine
B. Leucine
C. Threonine
D. Lysine
Answer: B. Rationale: UUA is one of six leucine codons (UUA, UUG, CUU, CUC, CUA, CUG).

UUG codes for:
A. Methionine
B. Leucine
C. Valine
D. Glutamine
Answer: B. Rationale: UUG is another leucine codon (see rationale above).

UCC codes for:
A. Proline
B. Threonine
C. Serine
D. Arginine
Answer: C. Rationale: UCC is one of the serine codons in the UCU–UCG family.

UCA codes for:
A. Tyrosine
B. Serine
C. Phenylalanine
D. Histidine
Answer: B. Rationale: UCA is a serine codon (UCU, UCC, UCA, UCG).

UCG codes for:
A. Cysteine
B. Leucine
C. Serine
D. Tryptophan
Answer: C. Rationale: UCG completes the set of UCN serine codons.

UAC codes for:
A. Stop

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