11 markeasy
What is a mutation?
Choose your answer
A process used in genetic engineering.
A type of continuous variation.
A condition caused by a dominant allele.
A change in a gene.
Co-ordinated Sciences (Double Award) — Biology
Variation & Natural Selection — Multiple-Choice Questions (Cambridge International IGCSE Science): Exam Questions
Exam code:09738 questions · 8 marks · ≈ 8 min
21 markeasy
Which of the following characteristics shows discontinuous variation?
Choose your answer
Length of foot
Body mass
Tongue rolling ability
Height
31 markeasy
Which of the following is not a feature of natural selection?
Choose your answer
Production of many offspring.
Selection by humans.
Competition for resources.
Variation in the population.
41 markmedium
An island’s entire population of a butterfly species is descended from just two parents that were introduced from the mainland.
Which of the following statements about this butterfly population, compared with that of the mainland, is correct?
Choose your answer
The population shows more genetic variety.
The population will adapt more slowly to environmental changes.
The population shows more phenotypic variation.
The population is less in danger of collapsing from disease.
51 markmedium
Extended Tier Only
A patient with a bacterial infection is treated with antibiotics, but some of the bacteria survive.
Which statement about the surviving bacteria is correct?
Choose your answer
The bacteria have an allele that provides resistance to all antibiotics.
The bacteria are the result of selective breeding.
The bacteria have an allele that provides resistance to the antibiotic used.
The offspring of the bacteria will be more susceptible to the antibiotic.
61 markhard
The graph below shows the height of bean plants grown from 1000 bean seeds.
What type of variation do the plants show?
Choose your answer
Discontinuous only.
Continuous only.
Neither continuous or discontinuous variation.
Both continuous and discontinuous variation.
71 markhard
When growing millet, farmers choose seeds from high-yielding plants.
Which of the following is this an example of?
Choose your answer
Evolution
Adaptation
Artificial selection
Natural selection
81 markhard
Which row best describes the variation seen in human blood groups?
| has no intermediates | shows continuous variation | shows discontinuous variation | |
|---|---|---|---|
| A | ✓ | X | ✓ |
| B | ✓ | ✓ | X |
| C | X | ✓ | X |
| D | X | X | ✓ |
Choose your answer