Key Area 1.7: Evolution

Question 1

What is evolution?

Answer 1

Evolution is the process by which living things change over time, over many generations. These changes are as a result of changes to the genome (genomic variations).

Question 2

What is vertical gene transfer?

Answer 2

when genes are transferred down generations, ie from parent to offspring as a result of sexual or asexual reproduction

Question 3

What is horizontal gene transfer?

Answer 3

when genes are transferred across from an individual to others in the same generation. This does not occur due to reproduction