Let’s solve each problem step by step.
We need to remember the base pairing rules:
For DNA Replication (DNA → DNA):
- A pairs with T
- T pairs with A
- C pairs with G
- G pairs with C
For Transcription (DNA → RNA):
- A in DNA becomes U in RNA
- T in DNA becomes A in RNA
- C in DNA becomes G in RNA
- G in DNA becomes C in RNA
---
Problem #1
Original DNA:
A G T C T A A T C A G G C T A
Step 1: DNA Copy (Replication)
Pair each base:
- A → T
- G → C
- T → A
- C → G
- T → A
- A → T
- A → T
- T → A
- C → G
- A → T
- G → C
- G → C
- C → G
- T → A
- A → T
So DNA Copy =
T C A G A T T A G T C C G A T
Step 2: RNA (Transcription from Original DNA)
Use original DNA and transcribe to RNA:
- A → U
- G → C
- T → A
- C → G
- T → A
- A → U
- A → U
- T → A
- C → G
- A → U
- G → C
- G → C
- C → G
- T → A
- A → U
So RNA =
U C A G A U U A G U C C G A U
---
Problem #2
Original DNA:
G T A A T C G G C T A A T C G
DNA Copy (Replication):
- G → C
- T → A
- A → T
- A → T
- T → A
- C → G
- G → C
- G → C
- C → G
- T → A
- A → T
- A → T
- T → A
- C → G
- G → C
DNA Copy =
C A T T A G C C G A T T A G C
RNA (Transcription from Original DNA):
- G → C
- T → A
- A → U
- A → U
- T → A
- C → G
- G → C
- G → C
- C → G
- T → A
- A → U
- A → U
- T → A
- C → G
- G → C
RNA =
C A U U A G C C G A U U A G C
---
Problem #3
Original DNA:
T A A A G T C G C A T G C T T
DNA Copy (Replication):
- T → A
- A → T
- A → T
- A → T
- G → C
- T → A
- C → G
- G → C
- C → G
- A → T
- T → A
- G → C
- C → G
- T → A
- T → A
DNA Copy =
A T T T C A G C G T A C G A A
RNA (Transcription from Original DNA):
- T → A
- A → U
- A → U
- A → U
- G → C
- T → A
- C → G
- G → C
- C → G
- A → U
- T → A
- G → C
- C → G
- T → A
- T → A
RNA =
A U U U C A G C G U A C G A A
---
Problem #4
Original DNA:
G T A G T C G A A G C T A A G
DNA Copy (Replication):
- G → C
- T → A
- A → T
- G → C
- T → A
- C → G
- G → C
- A → T
- A → T
- G → C
- C → G
- T → A
- A → T
- A → T
- G → C
DNA Copy =
C A T C A G C T T C G A T T C
RNA (Transcription from Original DNA):
- G → C
- T → A
- A → U
- G → C
- T → A
- C → G
- G → C
- A → U
- A → U
- G → C
- C → G
- T → A
- A → U
- A → U
- G → C
RNA =
C A U C A G C U U C G A U U C
---
Final Answer:
Problem #1:
DNA Copy: T C A G A T T A G T C C G A T
RNA: U C A G A U U A G U C C G A U
Problem #2:
DNA Copy: C A T T A G C C G A T T A G C
RNA: C A U U A G C C G A U U A G C
Problem #3:
DNA Copy: A T T T C A G C G T A C G A A
RNA: A U U U C A G C G U A C G A A
Problem #4:
DNA Copy: C A T C A G C T T C G A T T C
RNA: C A U C A G C U U C G A U U C
Parent Tip: Review the logic above to help your child master the concept of dna rna replication worksheet.
