Table of Contents
How long is the DNA strand?
The incredible thinness of DNA strands allows them to be very tightly packed, as otherwise most DNA molecules would not fit inside of cells. For perspective, if you stretched out every strand of DNA contained in just a single human cell end-to-end, it would measure almost two meters, or around 6.6 feet in length.
Is a DNA molecule long or short?
DNA or deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. Your genome? is made of a chemical called deoxyribonucleic acid, or DNA for short.
Is DNA 2 meters long?
Each human cell contains approximately 2 meters of DNA if stretched end-to-end; yet the nucleus of a human cell, which contains the DNA, is only about 6 μm in diameter.
What is a single long DNA molecule?
A chromosome contains a single, long DNA molecule, only a portion of which corresponds to a single gene. Humans have approximately 20,000 genes arranged on their chromosomes.
Which of these contains a single long DNA molecule?
Answer: A chromosome contains a single long DNA molecule.
How do you calculate the length of DNA?
The total length of DNA present in one adult human is calculated by the multiplication of. (length of 1 bp)(number of bp per cell)(number of cells in the body) (0.34 × 10 −9 m)(6 × 10 9)(10 13) 2.0 × 10 13 meters.
What is the length of DNA from a single human cell?
Stretched end-to-end, the DNA molecules in a single human cell would come to a length of about 2 meters (roughly 6 feet). Thus, the DNA for a cell must be packaged in a very ordered way to fit and function within a structure (the cell) that is not visible to the naked eye.
How many genes can be stored on a DNA molecule?
The complete set of your DNA is called your genome. It contains 3 billion bases, 20,000 genes , and 23 pairs of chromosomes! You inherit half of your DNA from your father and half from your mother. This DNA comes from the sperm and egg, respectively.
How long does it take to sequence DNA?
One human genome can be sequenced in about a day, though the analysis takes much longer. DNA sequencing machines cannot sequence the whole genome in one go. Instead, they sequence the DNA in short pieces, around 150 letters long.