Which of the following statements about the globin genes is true?
A) Different genes are expressed during different stages of prenatal development.
B) Only one copy is functional.
C) The lengths of the mRNAs are very different for different genes.
D) They are the result of differential posttranscriptional splicing.
E) The transcripts are longer than the coding regions.

Question

Quizplus · Accepted Answer

The globin genes are expressed at different stages of development. For example, during prenatal development, predominantly the ζ gene is expressed, followed by the α gene after birth. Both β-like and γ-like genes are expressed during fetal development. Therefore, option A is the true statement. Option B is incorrect because both maternal and paternal copies of the globin genes are functional. Option C is incorrect because the lengths of the mRNAs are almost similar. Option D is incorrect because there is no differential posttranscriptional splicing involved in the expression of globin genes. Option E is incorrect because the transcripts are shorter than the coding regions in globin genes.

Which of the Following Statements About the Globin Genes Is