Strawberries
are an exceptional fruit to use for this DNA extraction lesson because they yield more DNA than any other fruit (i.e. banana, kiwi, etc.). Strawberries are octoploid, meaning that they have eight copies of each type of chromosome.
Is there DNA in all fruits?
All living things have DNA
. This hands-on activity will enable you to extract DNA from fruit, such as strawberries, using everyday household items.
Which fruit has more DNA strawberry or banana?
Strawberries
have large genomes; they are octoploid, which means they have eight of each type of chromosome in each cell. Thus, strawberries are an exceptional fruit to use in DNA extraction labs and strawberries yield more DNA than any other fruit (i.e. banana, kiwi, etc.).
Which has more DNA fruits or vegetables?
It ended up that
the fruits
did have more DNA than the vegetables but not by far. For the different types of fruits and vegetables, the Tropical and Exotic with banana and mango did the best, looking at what ranking they came in and if it beat the vegetable it was against.
Why does a banana have more DNA than a strawberry?
We came up with the hypothesis that the strawberry will have more DNA tyhan the banana
because the strawberries have more seeds than the banana and it produces more quantity
. … Therefore, we made the conclusion based on the results and data, that in reality the banana has more DNA then the strawberry.
What is the best fruit for DNA extraction?
Bananas, kiwis and strawberries
all work well. (Remove the skin of the bananas and kiwi, we just want the insides!) Step 2: In a separate bowl, mix the washing up liquid, salt and tap water. Stir gently trying to avoid making too many bubbles in the mixture.
Are strawberries the only food with DNA?
We use strawberries instead of other fruits because they have even more 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).
Are bananas the only fruit with DNA?
“You share 50 percent of your DNA with each of your parents. But with bananas, we share about 50 percent of our genes, which turns out to be
only about 1 percent of our DNA
,” emails Mike Francis, a Ph. D. student in bioinformatics at the University of Georgia.
What foods do not contain DNA?
The only living parts that don't contain DNA are things like
egg whites or filtered milk
that are there for energy storage, or blood juices in which our blood cells float.
What foods contain DNA?
But in general,
meat, fruit, grains, vegetables, eggs, milk and most other foods
contain DNA. The amount of extra DNA introduced into a plant by molecular methods is about one part in a million or .
Does chocolate have DNA?
Chocolate comes from the beans of the cacao tree, Theobroma cacao. Just like humans, and every other living organism,
the cacao tree has DNA
.
Do nuts contain DNA?
A diet “
high in DNA
” is a living diet packed with fresh fruits and vegetables, nuts and seeds, grains and meats, and to a lesser extent dairy (only milk will have a bit of DNA, from shed cow cells, and higher fat items like whipped cream will have trace amounts if any).
How much DNA is in a banana?
Even bananas surprisingly still share about
60% of
the same DNA as humans!
Why do you mash the fruit before extracting DNA?
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 DNA is closest to humans?
Ever 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.
Why do ripe strawberries have more DNA than green ones?
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.
