What are histones?
Q: What are histones?
A: Histones are proteins found in eukaryotic cell nuclei that package DNA into structural units called nucleosomes.
Q: What is the function of histones?
A: The function of histones is to act as spools around which DNA winds, package DNA into nucleosomes, and play a role in gene regulation.
Q: What would happen without histones?
A: Without histones, the unwound DNA in chromosomes would be very long.
Q: How much DNA is in each human cell?
A: Each human cell has about 1.8 meters of DNA.
Q: How much chromatin does each human cell have?
A: Each human cell has about 90 millimeters of chromatin.
Q: What happens during mitosis?
A: During mitosis, chromatin is duplicated and condensed, resulting in about 120 micrometers of chromosomes.
Q: What is the role of histones in chromosomes?
A: Histones are the chief protein components of chromatin, the active component of chromosomes.
