OCR A-Level Biology H420
Cell Structure
Biological Molecules
Nucleotides and Nucleic Acids
Enzymes
Biological Membranes
Cell Division, Cell Diversity and Cellular Organisation
Exchange Surfaces
Transport in Animals
Transport in Plants
Communicable Diseases, Disease Prevention and the Immune System
Biodiversity
Classification and Evolution
Communication and Homeostasis
Excretion as an Example of Homeostatic Control
Neuronal Communication
Hormonal Communication
Plant and Animal Responses
Photosynthesis
Respiration
Cellular Control
Patterns of Inheritance
Manipulating Genomes
Cloning and Biotechnology
Ecosystems
Populations and Sustainability
Practical Skills and Mathematical Requirements
Cloning and Biotechnology
Advantages and disadvantages of animal cloning
- 1 thing to know
- Components 02 and 03
Overview
Elite genetics, medical uses, conservation and research, set against low success rates, health problems, reduced longevity, cost and ethical objections.
What you need to know
Answer each one before you reveal it.
Questions from this subtopic
Each one with the model answer underneath.
- 1
How can artificial animal cloning preserve elite genetics in agriculture?
Model answer
By cloning animals with superior traits (e.g., high milk yield), their exact genetic makeup can be replicated in offspring.
- 2
How are genetically modified cloned animals used in medicine?
Model answer
They can be engineered to produce pharmaceutical proteins in their milk or other tissues.
- 3
How might animal cloning contribute to conservation?
Model answer
It could potentially be used to increase populations of endangered species or even attempt to revive recently extinct species.
- 4
Why is animal cloning valuable for research?
Model answer
It provides genetically identical animals for studying development, disease mechanisms, and testing treatments.
- 5
Why are low success rates a concern in animal cloning?
Model answer
Many cloning attempts fail, requiring numerous egg cells and surrogate mothers to produce a single viable clone.
- 6
What health problems are commonly observed in cloned animals?
Model answer
Clones often suffer from developmental abnormalities, organ defects, and immune system problems.
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