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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Definitions:

Air Temperatures

The measure of how hot or cold the air is, typically reported in degrees Celsius or Fahrenheit, a fundamental aspect of weather and climate.

Plucking

The removal of pieces of rock by a glacier.

Abrasion

The process of wearing down or rubbing away materials through mechanical action, often seen in geological contexts.

Scraping

the process of removing material from a surface using a hard edge or object.