WorksheetsGCSE Biology AQA B14 Variation and Evolution
Total questions: 13
Worksheet time: 8mins
What causes variation in organisms?
Only genetic causes
Only environmental causes
Both genetic and environmental causes
Neither genetic nor environmental causes
What is the term for different versions of the same organism?
Mutations
Variants
Phenotypes
Ancestors
What is the effect of most mutations on the phenotype?
They always cause a total change
They never affect the phenotype
They usually have no effect
They always improve the phenotype
What process explains the adaptation of organisms to their environment?
Genetic variation
Mutation
Natural selection
Common ancestry
What is selective breeding primarily used for?
To increase genetic diversity
To breed animals or plants with desired characteristics
To create genetically modified organisms
To reduce the yield of crops
What is a potential negative result of selective breeding?
Increased genetic diversity
Inbreeding - reduced genetic diversity
Higher crop yields
Resistance to diseases
What does genetic engineering involve?
Breeding animals naturally
Modifying the genome of an organism by introducing a gene from another organism
Increasing the yield of crops through traditional farming
Reducing the size of plants
What is a genetically modified organism?
An organism with increased genetic diversity
An organism that has been bred naturally
An organism that has had its genome changed
An organism with reduced yield
What is the role of a vector in genetic engineering?
To increase the yield of crops
To transfer a gene to the target organism
To breed animals with desired traits
To reduce the risk of diseases
What is a common concern about genetically modified crops?
They are more nutritious
They may affect wild flowers and insects
They are easier to grow
They have no impact on the environment
Why type of cloning involves fusing a body cell nucleus and an egg cell with its nucleus removed?
Tissue culture
Adult cell cloning
Cuttings
Embryo cloning
Why type of cloning involves is expensive and involves making thousands of plants from one tiny piece of plant?
Tissue culture
Adult cell cloning
Cuttings
Embryo cloning
Organize these options into benefits and risks of adult cell cloning
Can be genetically engineered to produce useful substances
Can be used to save animals from extinction
Can be used for cloning human babies with certain characteristics
Can reduce genetic diversity
