If Each Interphase Nucleus in 100 Epithelial Cells from a Rat

question 169

Multiple Choice

If each interphase nucleus in 100 epithelial cells from a rat contains a single Barr body, one can conclude that

• A) the cells have an excess of DNA methyltransferase.
• B) the cells have a deficiency of DNA methyltransferase.
• C) all of the chromatin in these cells is inactive.
• D) the cells came from a male rat.
• E) the cells came from a female rat.

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