AQA GCSE BIOLOGY - Genetics &
Evolution B15 Exam And Correct
Answers.
Define the term 'evolution' - Answer A change in the inherited characteristics of a population over time
through a process of natural selection which may result in the formation of a new species.
What does the theory of evolution by natural selection state? - Answer all species of living things have
evolved from simple life forms that first developed more than three billion years ago.
How can natural selection result in the formation of a new species? - Answer if two populations of one
species become so different in phenotype that they can no longer interbreed to produce fertile offspring
State two sources of evidence for evolution - Answer fossils and antibiotic resistance in bacteria
Which theory of evolution is now widely accepted? - Answer natural selection
(Separates) Suggest why Darwin's theory is now widely accepted - Answer Evidence of Darwin's theory
is now available as it has been shown that characteristics are passed on to offspring in genes.
How were living things classified traditionally? - Answer livings things were classified into groups
depending on their structure and characteristics in a system.
How are organisms named? - Answer the binomial system of genus and species
When are evolutionary trees used? - Answer evolutionary trees are a method used by scientists to
show how they believe organisms are related.
What causes a new strain of bacteria to be produced? - Answer mutations
Evolution B15 Exam And Correct
Answers.
Define the term 'evolution' - Answer A change in the inherited characteristics of a population over time
through a process of natural selection which may result in the formation of a new species.
What does the theory of evolution by natural selection state? - Answer all species of living things have
evolved from simple life forms that first developed more than three billion years ago.
How can natural selection result in the formation of a new species? - Answer if two populations of one
species become so different in phenotype that they can no longer interbreed to produce fertile offspring
State two sources of evidence for evolution - Answer fossils and antibiotic resistance in bacteria
Which theory of evolution is now widely accepted? - Answer natural selection
(Separates) Suggest why Darwin's theory is now widely accepted - Answer Evidence of Darwin's theory
is now available as it has been shown that characteristics are passed on to offspring in genes.
How were living things classified traditionally? - Answer livings things were classified into groups
depending on their structure and characteristics in a system.
How are organisms named? - Answer the binomial system of genus and species
When are evolutionary trees used? - Answer evolutionary trees are a method used by scientists to
show how they believe organisms are related.
What causes a new strain of bacteria to be produced? - Answer mutations
