Within the nucleus of eukaryotic cells, which of the following structures contains the
tightly coiled genetic material?

The correct answer is Chromosomes.

Key Points

• Chromosomes are thread-like structures located within the nucleus of eukaryotic cells.
• They are composed of tightly coiled DNA and associated proteins, such as histones, which help in packaging the genetic material.
• Chromosomes carry the genetic instructions (genes) that determine traits and regulate cellular functions.
• In humans, there are 23 pairs of chromosomes (46 total), including 22 pairs of autosomes and one pair of sex chromosomes (XX or XY).
• Chromosomes undergo replication during cell division, ensuring genetic material is accurately passed to daughter cells.

Additional Information

• DNA: Deoxyribonucleic acid is the molecule that contains genetic instructions for the development, functioning, growth, and reproduction of all living organisms.
• Histones: Proteins that assist in packaging DNA into a compact structure, allowing efficient organization within the nucleus.
• Nucleus: The control center of eukaryotic cells, housing the chromosomes and regulating gene expression and cell functions.
• Cell Division: Chromosomes play a critical role during mitosis and meiosis, ensuring accurate segregation of genetic material.
• Chromatin: The less condensed form of chromosomes, present during interphase, which allows transcription and DNA replication.