Which structure in the cell nucleus contains the genetic material and is usually linear?

Which structure in the cell nucleus contains the genetic material and is usually linear?

• A. Nucleus
• B. Chromosome
• C. Gene
• D. Genome

Answer: (B)

The structure that contains the genetic material inside the nucleus and is usually linear is the chromosome. In eukaryotic cells, DNA is organized into long, linear molecules called chromosomes, which are packaged with proteins to form chromatin. Each chromosome carries many genes, so a gene is a specific DNA sequence located on a chromosome rather than the entire structure itself. The genome denotes all genetic material of an organism, including any additional DNA outside the nucleus in some organelles, not just the nuclear chromosomes. While some organisms have circular chromosomes (especially outside the nucleus), within the nucleus the standard, linear form is the chromosome.

The structure that contains the genetic material inside the nucleus and is usually linear is the chromosome. In eukaryotic cells, DNA is organized into long, linear molecules called chromosomes, which are packaged with proteins to form chromatin. Each chromosome carries many genes, so a gene is a specific DNA sequence located on a chromosome rather than the entire structure itself. The genome denotes all genetic material of an organism, including any additional DNA outside the nucleus in some organelles, not just the nuclear chromosomes. While some organisms have circular chromosomes (especially outside the nucleus), within the nucleus the standard, linear form is the chromosome.