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Tutor HuntTest QuestionsBiology QuestionsYear 10 Biology Questions

 

Selective Breeding (GCSE Biology)

The following is a GCSE Biology test covering 'Selective Breeding' from the broader topic Inheritance, Variation And Evolution. The test is geared towards the AQA exam board style syllabus.
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What does “selection pressure” mean in the context of selective breeding?
Which outcome would indicate successful selective breeding for drought tolerance in a crop?
Which pair of parents would a breeder choose to produce offspring that are likely to show hybrid vigour?
Why might selective breeding take many generations to achieve a strong improvement in a complex trait?
What is one practical reason breeders record pedigrees (family trees) of animals?
What does “heritability” of a trait mean in selective breeding?
Which genetic principle makes selective breeding slow when a desirable trait is controlled by many genes?
Why is genetic variation important for the success of selective breeding programs?
Which of the following best describes hybrid vigour (heterosis) often seen in first-generation crosses?
A breeder selects several traits at once (e.g., disease resistance and high weight). Which challenge is commonly faced when selecting for multiple traits?
Which practice helps reduce the risk of inbreeding depression in a closed breeding population?