GCSE Biology – Evolution – Primrose Kitten

GCSE Biology – Evolution

Last updated: 30/04/2020

Edexcel GCSE Science – Biology higher Natural selection and genetic modification GCSE Biology – Evolution

Learning Objectives

-I can recall that mutations continuously occur
-I can define evolution
-I can describe the theory of evolution

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Question 1 of 25

1. Question
When did simple life forms first exist?
- More than 3 billion years ago
- More than 2 million years ago
- More than 1 billion years ago
- More than 3 million years ago
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Question 2 of 25

2. Question
What causes a change in an individual’s genes?
- A mutation
- A change in the offspring
- A change in the parents
- A change in environmental conditions
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Question 3 of 25

3. Question
Do mutations always result in beneficial characteristics?
- No
- Yes, in humans
- Yes, in plants
- Yes, in all species
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Question 4 of 25

4. Question
When do mutations take place?
- When cells divide
- When genes are formed
- When a cell is formed
- When plant cells split
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Question 5 of 25

5. Question
How often do mutations occur?
- All the time
- Once a year
- Once a month
- Once during the individual's lifetime
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Question 6 of 25

6. Question
How often do mutations cause variation?
- Very rarely
- Never
- Frequently
- Always
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Question 7 of 25

7. Question
Why might mutations then cause evolution?
- If the variation suits the environment of that population
- If the variation does not suit the population's environment
- If the variation has no change on the population's phenotype
- If the variation causes more deaths of the offspring
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Question 8 of 25

8. Question
What is evolution?
- A change in the inherited characteristics of a population
- A change in the inherited characteristics of an individual
- The same inherited characteristics in an individual
- A change in where characteristics come from in offspring
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Question 9 of 25

9. Question
Who made the evolution theory?
- Charles Darwin
- Carl Linnaeus
- Gregor Mendel
- Alfred Wallace
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Question 10 of 25

10. Question
What is the name of the evolution theory?
- The theory of evolution by natural selection
- The theory of evolution
- The theory of evolution by artificial selection
- The theory of evolution by selective breeding
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Question 11 of 25

11. Question
How does evolution occur?
- Through a process of natural selection
- Through a process of selective breeding
- Through a process of artificial selection
- Through a process of active transport
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Question 12 of 25

12. Question
How long does it take for evolution to occur?
- Millions of years
- 10 years
- 20 years
- Thousands of years
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Question 13 of 25

13. Question
What might evolution eventually cause?
- The formation of a new species
- The extinction of the species
- The population to revert back to its original look
- There to be a net 0 change
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Question 14 of 25

14. Question
What have all species of living things evolved from?
- Simple life forms
- Complex life forms
- No life forms
- Humans
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Question 15 of 25

15. Question
If a new useful variation forms, what process occurs?
- Natural selection
- Selective breeding
- Genetic modification
- Artificial selection
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Question 16 of 25

16. Question
What is natural selection?
- The most well-suited individuals surviving
- The worst-suited individuals surviving
- All offspring surviving
- All offspring from an individual dying
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Question 17 of 25

17. Question
Why does natural selection occur?
- Competition
- Hormones
- Reproductive system
- Natural selection does not occur
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Question 18 of 25

18. Question
What is passed on to the next generation?
- One allele per gene from each parent
- Entire DNA makeup
- Entire mRNA makeup
- Two alleles for each gene from the father
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Question 19 of 25

19. Question
Why are only the best-suited characteristics passed on?
- As only the individuals with these characteristics survive
- As only the individuals without these characteristics survive
- As only the individuals with these characteristics die
- As alleles are not always passed on to offspring
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Question 20 of 25

20. Question
What happens to the phenotype of a population over generations?
- It slightly changes by natural selection
- It stays the same by natural selection
- There is no phenotype after many generations
- The phenotype completely changes by artificial selection
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Question 21 of 25

21. Question
Why might two populations of the same species have the same phenotype?
- If environmental conditions are similar
- If environmental conditions are different
- if the two environments have different temperatures
- If the two environments have different rainfall levels
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Question 22 of 25

22. Question
Why might two populations of the same species have different phenotypes?
- If environmental conditions are different
- If environmental rainfall is the same
- If environmental conditions are similar
- If environmental temperature is the same
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Question 23 of 25

23. Question
What happens if two populations of a species have extremely different phenotypes?
- They can no longer interbreed to produce fertile offspring
- They can no longer breed to produce offspring
- They can no longer survive
- They can interbreed to produce infertile offspring
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Question 24 of 25

24. Question
If two populations can no longer interbreed, what has formed?
- A new species
- A new population
- A new kingdom
- A new class
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Question 25 of 25

25. Question
Give an example of a useful variation for a camel.
- Long eyelashes to stop sand getting into eyes
- Short eyelashes to stop sand getting into eyes
- No eyelashes so more sand gets into eyes
- Eyes sunk in pits so sand gets caught in eyes
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