DNA Structure and Replication

ID #1696

I was wondering why this is a false statement: Heterochromatin is only found at the periphery of the nucleus.

This is false because even though it is primarily found at the periphery of the nucleus, it is not only found there. Look at that electron micrograph of the interphase nucleus from Monday's lecture -- there are lots of dark "spots" throughout the nucleus (and I'm not referring to the nucleolus), and these are "pockets" of heterochromatin.


Also, be very aware of the usage of words like "only," "always," and "never" in exam and homework problems. There are not many times throughout the semester when the use of absolutes like this is justified, so it will often be a red flag in that particular statement.

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