Selective breeding and human food security
I can explain what is meant by selective breeding and why it is important for human food security.
- Year 10
- AQA
Selective breeding and human food security
I can explain what is meant by selective breeding and why it is important for human food security.
Lesson details
Key learning points
- Some plants and animals have features that are useful to us (e.g. they can provide food and materials, or do work).
- Selective breeding by humans causes particular features to become more (or less) common in the species.
- After many generations, the resulting domesticated species can be quite different to their wild ancestors.
- Examples of the selective breeding of a farm animal and a crop from their wild ancestors.
- The dependence of humans on domesticated animals and crops for food security.
Keywords
Selective breeding - The process in which humans choose individuals with desirable traits and mate them in order to make offspring with these desirable traits.
Crop - Plants grown on a large scale for food or profit.
Domesticated - An animal that has been tamed and is kept as a pet or on a farm.
Farm animal - Animals that are kept on farms for food or work.
Food security - A measure of the quantity and quality of food available to support households or whole communities.
Common misconception
Students often forget that selective breeding is a process that happens over many generations.
This lesson includes examples of how to describe the process of selective breeding.
Equipment
None required.
Content guidance
- Depiction or discussion of sexual content
Supervision
Adult supervision required
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Why are there no fossils younger than 10 000 years?
Q2.Match the words to their meaning.
Q3.Which layer of sedimentary rock will contain the youngest fossils?
Q4.Scientists think Archeopteryx and modern birds share a common ancestor, but there is a gap in the fossil record. Why are there gaps in the fossil record?
Q5.Which species is the common ancestor?
Q6.The diagram shows a suggestion for the evolution of the hippopotamus and some modern whales. Which statement is correct?
