B14 Variation and evolution

Question 1

mutation

Answer 1

a change in the genetic material of an organism

Question 2

natural selection

Answer 2

the process by which evolution takes place. Organisms produce more offspring than the environment can support. Only those that are most suited to their environment will survive to breed and pass on their useful characteristics to their offspring

Question 3

selective breeding

Answer 3

speeds up natural selection by selecting animals or plants for breeding that have a required characteristic

Question 4

tissue culture

Answer 4

a modern way of cloning plants that allows thousands of new plants to be created from one piece of plant tissue