# Selective breeding has been used to produce cattle with increased milk yield. Describe how farmers could use selective breeding to develop a herd of cattle that consistently produces a high milk yield.

> Eduqas GCSE Biology — 7.3 Variation and evolution · Describe · 4 marks

## Mark scheme (4 marks)

1. Identify and select cattle with the highest milk yield as parents
2. Breed selected cattle together
3. Select offspring with the highest milk yield and breed them again
4. Repeat the process over many generations until the desired characteristic is established in the herd

## Key terms

- [selective breeding](https://www.gradenine.co.uk/glossary/selective-breeding)

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Source: [GradeNine](https://www.gradenine.co.uk/q/selective-breeding-has-been-used-to-c9eab061) · Published by Druglandscape Ltd.