Question

What are both chromosomes and genes are made of?

Answer 1

Both are made up of DNA:

1. Deoxyribonucleic acid makes up chromosomes and genes (DNA).
2. The chromosome contains many genes, and these genes contain the instructions for constructing specific proteins.

Chromosomes:

1. A chromosome is a thread-like structure that exists within the nucleus of cells.
2. Each chromosome is made up of DNA and histone proteins, which are tightly packed proteins.
3. Only during cell division is the structure of the chromosomes visible.

Genes:

1. Genes are found in a linear fashion within the chromosome.
2. The functional unit of heredity is the gene.
3. Wilhelm Johannsen coined the term "gene" in the year 1909.
4. DNA and chromosomes make up genes.
5. Genes are found on each chromosome.