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GCSE Combined Science · key term
The movement of genes from a crop into other crops or related wild plants through reproduction.
Used by AQA and OCR
Specification 4.3.3.8 · Paper 1, Paper 2
Revise: Genetic ModificationModified genes could spread into conventional crops or related wild plants through reproduction. This is called outcrossing. If a transferred characteristic helps wild plants survive or compete, it could affect other species and disrupt the ecosystem.
Specification B6.2d · Biology Paper 2
The transfer of genes between plants through cross-pollination and reproduction, for example from a GM crop to a compatible wild relative.
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GM genes may spread through outcrossing. Pollen from a GM crop can fertilise a compatible conventional crop or wild relative, and offspring may inherit the introduced gene. If a herbicide-tolerance gene reaches a weed, that weed could become harder to control with the same herbicide.
