Question

Question 8 [15 marks / 15 minutes] Deamination of cytosine (C) gives uracil (U). a) Discuss how this chemical damage would be repaired. [4 marks] b) With respect to this DNA repair, propose what would be different if DNA normally had uracil instead of thymine (T). [4 marks] c) Explain when/how the chemical damage would become a mutation. [4 marks] d) Describe the mutation that could be produced. [3 marks]

          Question 8 [15 marks / 15 minutes]
Deamination of cytosine (C) gives uracil (U).
a) Discuss how this chemical damage would be repaired. [4 marks]
b) With respect to this DNA repair, propose what would be different if DNA normally had uracil instead of thymine (T). [4 marks]
c) Explain when/how the chemical damage would become a mutation. [4 marks]
d) Describe the mutation that could be produced. [3 marks]

Question 8 [15 marks / 15 minutes]
Deamination of cytosine (C) gives uracil (U).
a) Discuss how this chemical damage would be repaired. [4 marks]
b) With respect to this DNA repair, propose what would be different if DNA normally had uracil instead of thymine (T). [4 marks]
c) Explain when/how the chemical damage would become a mutation. [4 marks]
d) Describe the mutation that could be produced. [3 marks]

Added by Michelle V.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Sri K

03/30/2023

Step 1

Deamination of cytosine (C) gives uracil (U). This chemical damage can be repaired through the base excision repair (BER) pathway. In this process, a DNA glycosylase enzyme recognizes and removes the uracil base, creating an abasic site. An AP endonuclease enzyme Show more…

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Deamination of cytosine (C) gives uracil (U). a) Discuss how this chemical damage would be repaired. b) With respect to this DNA repair, propose what would be different if DNA normally had uracil instead of thymine (T). c) Explain when/how the chemical damage would become a mutation. d) Describe the mutation that could be produced.