You could fit 90,000 strands of DNA side by side in a single adult human hair. Yup, that’s very much true. DNA strand is a very thin molecule averaging only about two nanometers in width. That is roughly two billionths of a meter.
When you compare the width of DNA with your hair then it is very thin. As given above, DNA double helix is about 2 nanometers wide while the width of average adult human hair is around 180 micrometers. This means that an average human hair roughly equals 90,000 strands of DNA kept side by side.
DNA strand is also a very long molecule. For instance, if we lay out every DNA strand (in a cell) end to end, it would measure around 2 meters. So, it is nearly impossible to pack it inside the nucleus of a cell. But, the incredible thinness of the DNA strand allows it to be very tightly packed.
Also Read: 11 Amazing Facts about DNA You didn’t Know.
So now we know that 90,000 strands of DNA can be packed inside a single human hair. Also, we now know that a DNA strand is not only thin but also very long (i.e. about 2 meters long). 🙂. So that is all for now, meet you in my next article. Keep Reading, Keep Exploring, and Keep Sharing your Knowledge, and above all BE CURIOUS. 🙂
Also Read: How a 2 meters long DNA is fitted into a 2 micrometers Nucleus?
- DNA Strands | What are DNA Strands? | AncestryDNA® Learning Hub. (2021). Retrieved 10 August 2021,
The plasma membrane is an outer, thin, semi-permeable membrane that surrounds the cytoplasm and the other constituents of the cell. The Fluid Mosaic model proposed by Singer and Nicholson in 1976, describes the plasma membrane as a structure in which a mosaic of proteins is discontinuously embedded in or attached to a fluid lipid bilayer (membrane).
Continue reading How do lipids maintain the fluidity of the plasma membrane? →
DNA is the genetic material in all except certain viruses. In Prokaryotic cells, DNA occurs in the cytoplasm and is the only component of the chromosomes. Whereas, in Eukaryotic cells, DNA is largely confined to the nucleus. Do you know, A human DNA contains 3 billion chemical letters. Yes, it is true. There are several other amazing and fun facts about DNA that we don’t know.
Continue reading 11 Amazing Facts about DNA You didn’t Know. →
In 1868, T. H. Huxley described protoplasm as the “physical basis of life”. Protoplasm is a clear, colorless and jelly-like substance which seemed to make up the contents of the cell. It was also described as “substance of life” or “living material”. Continue reading What is the physical basis of life? →
An average Human cell (diploid) contains about 6.4 billion base pairs of DNA divided among 46 chromosomes. The length of each base pair is about 0.34 nm. Therefore, if the DNA molecule in a diploid cell were laid out end to end, the total length of DNA would be approximately 2 meters. Continue reading How a 2 meters long DNA is fitted into a 2 micrometers Nucleus? →
Cellular Totipotency is the innate ability of a single cell to produce all cell types and to organize them into an entire organism when cultured in a suitable culture medium at an appropriate temperature and aeration conditions. Plant spores and Zygote are examples of single cells that show cellular totipotency. Continue reading What is meant by Cellular Totipotency? →