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Biology Question Pack Vol 1. Question 21
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Korolos_5348
#1 Posted : Saturday, July 11, 2020 2:12:41 PM
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Hello,

I came across this question and I was wondering why the answer wouldn't be A. The stem is

"In the macronucleus, the genes for rRNA are located extrachromosomally. This suggests that the rRNA genes are:"

The answer choices are

A. nonlinear.
B. nonfunctional.
C. self-replicating.
D. rearranged.

I thought that in prokaryotes any extrachromosomal DNA is referring to a plasmid and is thus circular, not linear.

Thank you in advance
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INSTR_Shinthujah_68
#2 Posted : Monday, July 13, 2020 4:28:07 PM
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Hello,

Extrachromosomal DNA in prokaryotes are typically in the form of plasmids (circular) however, there are prokaryotes with linear extrachromosomal DNA. For that reason, C is your best answer.

I hope this helps!

-Shin
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