What are two examples of traits that are expressed in a strawberry?
Give at least two examples of traits that are expressed in the strawberry. Examples: Color, size and sweetness.
What do you think the DNA will look like?
What does DNA look like? The DNA will look like a white, cloudy or fine stringy substance. DNA is not visible as a single strand to the naked eye, but when thousands of threads of DNA are present, you will be able to see the large groups of threads of DNA.
What does DNA extraction buffer do?
The function of the DNA extraction buffer ingredients are as follows: (1) The soap helps to dissolve the phospholipid bilayers of the cell membrane and organelles, (2) the salt is used to break up protein chains that bind around the nucleic acids, and (3) the ethanol is used to precipitate the DNA.
Why do we crush strawberries for DNA extraction?
Why? The physical smashing breaks the plant’s cell walls and allows the cytoplasm to leak out. Add 10mL (2 teaspoons) of extraction buffer (salt and soap solution) to the bag. Kneed/mush the strawberry in the bag again for 1 minute.
Where Can DNA be found in the cell of a strawberry?
nucleus
DNA is found in the nucleus of each cell.
Do you think the DNA from another organism would have a different appearance?
Yes, the DNA from both cell types will look just the same. The structure of DNA is consistent among all living things. It is a double helix shaped molecule (comprised of a sugar-phosphate backbone and paired nitrogenous bases) that condenses into chromosomes for packaging into cells.
Why do we add salt when doing the DNA extraction?
Your DNA’s sugar phosphate backbone is charged. By adding salt, we help neutralize the DNA charge and make the molecule less hydrophilic, meaning it becomes less soluble in water. The salt also helps to remove proteins that are bound to the DNA and to keep the proteins dissolved in the water.
How is DNA extracted?
The cells in a sample are separated from each other, often by a physical means such as grinding or vortexing, and put into a solution containing salt. The detergent breaks down the lipids in the cell membrane and nuclei. DNA is released as these membranes are disrupted.
What happens after DNA extraction?
After separation of DNA from aqueous solution, it is then rinsed with alcohol, a process known as purification. Purification removes all the remaining cellular debris and unwanted material. Once the DNA is completely purified, it is usually dissolved in water again for convenient storage and handling.