If Each Interphase Nucleus in a Preparation of Normal Rat

question 29

Multiple Choice

If each interphase nucleus in a preparation of normal rat epithelial cells is found to contain a single Barr body, one can conclude that

• A) the cells are in meiotic prophase.
• B) all of the chromatin in these cells is inactive.
• C) the DNA in these cells has replicated.
• D) the cells are not transcribing any genes.
• E) the cells came from a female rat.

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