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The alcohol used causes the precipitate to form due to a reaction allowing the hydrogen bonds between the nucleotides to form, which causes the DNA to become efficient packed and twisted together.
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∙ 11y ago
DNA precipitates and spools on a rod when it is mixed with alcohol. The alcohol causes the DNA to become less soluble in the solution, forcing it out of solution and forming a solid precipitate. The physical properties of the alcohol and DNA molecules are key factors in this separation process.
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What structural characteristic of DNA allows it to be spooled out on a rod?
DNA's double helix structure allows it to be wrapped around histone proteins to form nucleosomes, which can be further coiled and folded to form chromatin. This coiling and folding of DNA allows for its compaction and spooling out on a rod during cell division or when storing genetic material.
What is the name of the rod-shaped structure of tightly coiled DNA found in the cell nucleus of plants and animals called?
The rod-shaped structure of tightly coiled DNA found in the cell nucleus of plants and animals is called a chromosome.
What are rod-shape structures found in a nucleus?
Rod-shaped structures found in the nucleus are called chromosomes. They are composed of DNA and proteins, and are responsible for carrying genetic information from one generation to the next through cell division. Each species has a characteristic number and arrangement of chromosomes.
Rod shaped bodies that carry genetic info?
The rod-shaped bodies that carry genetic information are called chromosomes. Inside cells, chromosomes are made of DNA and contain genes that provide instructions for the development, growth, and functioning of living organisms. Chromosomes are passed down from parents to offspring during reproduction.
Rod shaped structure made of DNA?
A chromosome is a rod-shaped structure made of DNA found in the nucleus of a cell. Chromosomes contain genes that carry instructions for cell function and are passed on from parent to offspring during reproduction. Humans typically have 23 pairs of chromosomes.
Would chromosomal DNA spool if it was heated to 100 degrees?
If heated to a hundred degrees, chromosomal DNA would denature. Meaning the it would come apart and the complementary DNA strands would separate. One way to get DNA to spool (around a glass rod for example) is to remove it from the cell and precipitate it in solution. This can be done with with help of sodium chloride and isoamyl alcohol.
Why does native DNA precipitate as fibers?
Native DNA precipitates as fibers because of its helical structure and high molecular weight. When DNA is exposed to certain precipitating agents, such as alcohol or high salt concentrations, the DNA molecules come together and form a network of intertwined fibers that eventually coalesce into a visible precipitate.
DNA soluble in ethanol?
No, DNA is not soluble in ethanol. When the 2 are mixed, DNA can be spooled out by stirring the solution with a glass rod.
What structures contain the cells DNA?
The two-rod structures that contain the cell's DNA is the chromosome.
When a cell divides its DNA condenses into rod-like what?
you never did
When a cell divide DNA condenses into a rod-like what?
you never did
What structural characteristic of DNA allows it to be spooled out on a rod?
DNA's double helix structure allows it to be wrapped around histone proteins to form nucleosomes, which can be further coiled and folded to form chromatin. This coiling and folding of DNA allows for its compaction and spooling out on a rod during cell division or when storing genetic material.
What two structures contain DNA?
The two-rod structures that contain the cell's DNA is the chromosome.
What causes a tie rod to bend?
There are many causes for a tie rod on a vehicle to bend. This can occur due to hitting a pothole while driving or a curb.
What two rod structures contain the cell's DNA?
The two rod structures that contain the cell's DNA are chromosomes and chromatin. Chromosomes are highly condensed structures that contain the DNA during cell division, while chromatin is the relaxed form of DNA that is present in the nucleus during interphase.
Why is it that a sheet of bond paper stuck on the wall after rubbing it with plastic rod?
The plastic rod causes a build up of static electricity, which causes the paper to be attracted (stuck) to the wall.
DNA and proteins that are scrunched up into rod shaped structures in dividing cells?
chromatin
