Which threadlike structure of nucleic acids and protein in the nucleus carries genetic information in the form of genes?

Which threadlike structure of nucleic acids and protein in the nucleus carries genetic information in the form of genes?

• A. Nucleosome
• B. Chromosome
• C. Nucleolus
• D. Chromatin

Answer: (B)

Genes are stored on chromosomes, which are long, threadlike structures in the nucleus made of DNA wrapped around proteins. Chromosomes organize the genetic material and carry the information that determines inherited traits. During cell division they condense so each new cell gets a complete set of genes. Nucleosomes are the basic packaging units of DNA on histone proteins, not the carriers of genes themselves. Chromatin is the entire DNA–protein complex; it includes the material where genes reside, but the distinct carriers of genetic information are the chromosomes. The nucleolus is the region where ribosomal RNA is synthesized, not where genes are carried.

Genes are stored on chromosomes, which are long, threadlike structures in the nucleus made of DNA wrapped around proteins. Chromosomes organize the genetic material and carry the information that determines inherited traits. During cell division they condense so each new cell gets a complete set of genes.

Nucleosomes are the basic packaging units of DNA on histone proteins, not the carriers of genes themselves. Chromatin is the entire DNA–protein complex; it includes the material where genes reside, but the distinct carriers of genetic information are the chromosomes. The nucleolus is the region where ribosomal RNA is synthesized, not where genes are carried.