n inactive X chromosome is known as a(n) Blank______.Multiple choice question.inclusion bodyBarr bodytrisomymonosomy

Break Down the Problem

1. Determine the characteristics of an inactive X chromosome.
2. Identify the correct term from the provided options.

Relevant Concepts

• An inactive X chromosome in mammals is typically condensed and not active in gene expression.
• The terminology surrounding inactive X chromosomes can include specific biological terms.

Analysis and Detail

• The term "Barr body" is commonly used to refer specifically to an inactivated X chromosome. This name derives from Dr. Murray Barr, who first described them.
• Other options, such as "inclusion body," "trisomy," and "monosomy," refer to different biological concepts:
  • Inclusion bodies are aggregates of substances within cells.
  • Trisomy refers to a condition where an individual has three copies of a chromosome instead of the normal two.
  • Monosomy is when there is only one copy of a particular chromosome instead of the usual two.

Verify and Summarize

• Among the given choices, "Barr body" is the specific term used to describe an inactive X chromosome, making it the correct answer.

Final Answer

The correct answer is Barr body.