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40. Which of the following is not a post-transcriptional modification commonly made to transcripts in eukaryotic cells?
A. A modified guanine is added to the 3’ end of the transcript
B. Exons are spliced out
C. A string of adenines is added to the 5’ end of the transcript
D. All of the above

What ...

We once again encountered a question that we didn't agree with the answer key for.
The question asks how many chromosome pairs are given above after giving a karyotype of a male with trisomy 18. We think the answer should be 23 pairs of chromosomes, but the answer key says 22 pairs of chromosomes ...