Extracting DNA Biology (Triple+Combined) TIN

When extracting DNA we crush the fruit to...

• break down the DNA

• make it easier to handle

• break down the cell wall

• allow the DNA to be released

The buffer solution contains...

• salt and pepper

• sugar

• washing detergent and salt

• ethanol

Adding the buffer solution breaks down the cell membrane and...

• allows the DNA to leave the nucleus

• allows the DNA to stick together

• allows the DNA to break down

• allows the DNA to precipitate out of the mixture

Filtering the mixture of buffer solution and fruit removes any ___________ fruit/product.

Ice cold ethanol is added to _____________ the DNA from the mixture.

Which of the following are variations due to genetics

• Eye colour

• Scar

• Blood group

• Religion

• Gender

Which of the following are variations due to the environment

• Scar

• Accent

• Ability to tongue roll

• Religion

• Blood Group

Which of the following are variations due to genetics AND the environment

• Height

• Natural skin colour

• Weight

• Colour-blind

An allele is a different version of a _________

Most mutations have no effect on a phenotype. But if a mutation does have an effect, it can be either ___________ or _________.

• Positive

• Large

• Small

• Negative