Question

What is the unit of a chromosome?

Answer 1

Chromosomal unit:

1. The unit of the chromosome is the gene.
2. A gene is a DNA segment that carries information from parents to children and determines the heredity characters in the offspring.
3. DNA, which carries information in the form of genes, is a lengthy chain of paired chemical units (nucleotides) that can take one of four main forms.
4. A small portion of the DNA located in the nucleus is found in the mitochondria and chloroplasts.
5. The smallest component of a chromosome is a nucleosome.
6. To create this structure, histone proteins are wrapped around DNA.
7. It is 10 nanometers in diameter.
8. DNA is coiled around an eight-protein core called a histone.
9. Each nucleosome contains about 200 bp of DNA.
10. Two nucleosomes are connected by linker DNA.
11. Nucleosomes then compress to form chromatin fibers, which further compress to create chromosomes.