Why is strawberry used for DNA extraction?
Ripe strawberries are an excellent source for extracting DNA because they are easy to pulverize and contain enzymes called pectinases and cellulases that help to break down cell walls.
And most important, strawberries have eight copies of each chromosome (they are octoploid), so there is a lot of DNA to isolate..
What tricks can we use to see DNA?
Slowly pour cold isopropyl alcohol into the small clear glass until the glass is nearly full. Pour alcohol as gently as possible trying not to disturb the mixture that is already in the small clear glass. Observe the white, stringy, frothy mixture in the glass- that is your DNA!
Why is banana used in DNA extraction?
Explain that crushing the bananas separates its cells and exposes them to the soap and salt. The soap helps break down cell membranes and release DNA. The salt helps bring the DNA together, and the cold alcohol helps the DNA precipitate and come out of solution so it can be collected.
How do you get DNA from a banana?
Mashing the banana exposes a greater surface area from which to extract the DNA. The liquid soap is added to help break down cell membranes to release the DNA. The filtration step (pouring the mixture through the strainer) allows for the collection of the DNA and other cellular substances.
What fruit is best for DNA extraction?
Bananas, kiwis and strawberries all work well.
Why does a banana have more DNA than a strawberry?
The ripe and over ripe bananas produced a smaller amount of DNA because the cells that stick the nutrition break down and begin to decompose when it begins to ripen. The outcome showed me that over ripe kiwis and strawberries produce more measurable DNA.
Is 50 of our DNA banana?
Even bananas surprisingly still share about 60% of the same DNA as humans!
What DNA is closest to humans?
chimpanzeesEver since researchers sequenced the chimp genome in 2005, they have known that humans share about 99% of our DNA with chimpanzees, making them our closest living relatives.