What is the purpose of the strawberry DNA extraction lab?
While other fruits are soft and just as easy to pulverize, strawberries are the perfect choice for a DNA extraction lab for two very good reasons: (1) they yield way more DNA than other fruits, and (2) they are octoploid, meaning that they have eight copies of each type of DNA chromosome.
What can scientists learn about strawberries by extracting the DNA?
Scientists study DNA for many reasons: They can figure out how the instructions stored in DNA help your body to function properly. In this activity, strawberries will be used because each strawberry cell has eight copies of the genome, giving them a lot of DNA per cell.
How would you describe the appearance of the extracted DNA?
Describe the appearance of the DNA you extracted. The DNA will appear white and will form a clump made of string-like strands that wrap onto the glass rod. 2. DNA is not soluble in alcohol.
What does DNA look like when extracted from a strawberry?
Observe the line between the strawberry mixture and the alcohol. You will notice a white thread-like cloud appearing at this line. This is strawberry DNA. The DNA will clump together and float to the top of the alcohol layer.
What is the hypothesis of DNA extraction?
Hypothesis. The hypothesis is that the temperature of the Ethanol affects the amount of DNA extracted from a Strawberry. My hypothesis is that the hot ethanol at temperature 62 C might not work because the ethanol might evaporate, then there won’t be enough Ethanol to break the cell wall.
Why is strawberry DNA a good option for extracting visible DNA?
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.
Do you think human DNA will look the same as strawberry DNA?
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.
What does DNA look like?
What does DNA look like? A DNA molecule is a double helix, a structure that looks much like a ladder twisted into a spiral. DNA is often said to have a sugar and phosphate “backbone.” Each rung of the ladder is made of two nitrogenous bases linked together in the middle.
What is the hypothesis of strawberry DNA extraction?
How is strawberry DNA different from human DNA?
Each little piece of a living thing, known as a cell, has DNA in it. In humans each of these cells have 2 copies of the DNA, but in strawberries each of these have 8 copies of the DNA (scientists call this octoploid). That means strawberries have 4 times as many copies of DNA as humans, making it 4 times easier to see!
How do you extract DNA from Strawberry?
Make the Extraction Solution. The salt will break apart the proteins and other things that come out of the strawberry cells.
Why to use a strawberry 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.
Why do Strawberry cells need DNA?
Strawberries have DNA because the DNA serves as an instruction manual in order for the strawberry cells in properly function. Strawberries were used in this experiment because they have more DNA than any other fruits. Also, strawberries are octoploids, meaning that there are eight copies of DNA.
What is the DNA extraction of a strawberry?
DNA Extraction – Strawberry. Strawberries are octoploid, which means they have eight sets of chromosomes. The procedure for extracting DNA from a strawberry is simple, and the results are usually obvious, it is easy to see the white strands of DNA within the pink solution of strawberry juice.