Genetic diversity

Last updated: 18/02/2022

AQA A-Level Biology Investigation diversity Genetic diversity

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Question 1 of 18

1. Question
Where may genetic diversity be very low?
- Zoos
- Meadows
- Forests
- Oceans
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Question 2 of 18

2. Question
How can genetic diversity be estimated?
- Calculating the number of loci in one individual that are heterozygous
- Calculating the number of loci in one individual that are homozygous
- Difference in colour
- Difference in sex
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Question 3 of 18

3. Question
How is genetic variation identified?
- DNA sequencing
- Blood testing
- Observation
- Behavioural changes
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Question 4 of 18

4. Question
Why must animals and plants be accurately identified?
- So that measures of diversity are accurate
- So that measures of genetic variance are accurate
- So that plants and animals are not harmed accidentally
- So that habitats can be selected
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Question 5 of 18

5. Question
What is genetic erosion?
- Loss of particular alleles or genes from a population
- An increase in genetic diseases
- A decrease in genetic mutations
- Genes becoming less effective
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Question 6 of 18

6. Question
What is selective breeding?
- Selection of specific traits when breeding
- Selection of specific species
- Selection of specific offspring after breeding
- Selection of specific species from habitats
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Question 7 of 18

7. Question
Which of these decreases genetic diversity?
- Selective breeding
- Random breeding
- Random mutations
- Decreased human intervention
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Question 8 of 18

8. Question
What is continuous variation?
- Variation where there are two extremes and a full range of values in between
- Variation where there are distinct categories and nothing in between
- Variation caused by response to environmental factors
- Variation caused by possessing a different combination of alleles
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Question 9 of 18

9. Question
What is discontinuous variation?
- Variation where there are distinct categories and nothing in between
- Variation caused by possessing a different combination of alleles
- Variation between members of the same species
- Variation caused by response to environmental factors
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Question 10 of 18

10. Question
What is environmental variation?
- Variation caused by response to environmental factors
- Variation between members of different species
- Variation where there are distinct categories and nothing in between
- Variation caused by possessing a different combination of alleles
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Question 11 of 18

11. Question
What is genetic variation?
- Variation caused by possessing a different combination of alleles
- Variation caused by response to environmental factors
- Variation where there are distinct categories and nothing in between
- Variation between members of the same species
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Question 12 of 18

12. Question
What is interspecific variation?
- The difference between species
- Variation between members of the same species
- Variation caused by response to environmental factors
- Variation where there are distinct categories and nothing in between
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Question 13 of 18

13. Question
What is intraspecific variation?
- Variation between members of the same species
- The difference between species
- Variation where there are distinct categories and nothing in between
- Variation caused by possessing a different combination of alleles
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Question 14 of 18

14. Question
Which of these is not an example of continuous variation?
- Fur colour of a rabbit
- Height in humans
- Number of flagella on bacterium
- Length of plant stalk
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Question 15 of 18

15. Question
Which of these is not an example of discontinuous variation?
- Number of offspring
- Blood groups
- Gender
- Eye colour
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Question 16 of 18

16. Question
Which of the following best describes a change in the DNA base sequence?
- Mutations
- Changes in bonding
- Different enzymes
- Proteins present
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Question 17 of 18

17. Question
How would continuous data be best displayed graphically?
- Histogram
- Bar chart
- Scatter graph
- Pie chart
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Question 18 of 18

18. Question
How would discontinuous data be best displayed graphically?
- Bar chart
- Line graph
- Scatter graph
- Histogram
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