Multiple Choice
Which of the following statements is true regarding the a1 and a2 globin chains?
A) They are identical at the nucleotide and amino acid sequence level
B) They differ at the nucleotide level but are identical at the amino acid level
C) a1 pairs only with b1, and a2 pairs only with b2
D) a1 is expressed in the fetus, and a2 is expressed after birth
E) a2 is a pseudogene of a1
Correct Answer:
Verified
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