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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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Which outcome would indicate successful selective breeding for drought tolerance in a crop?
What is “inbreeding depression”?
Which genetic principle makes selective breeding slow when a desirable trait is controlled by many genes?
A breeder wants to increase milk yield in a herd. Which strategy would be an example of artificial selection?
Which method does a breeder use to maintain a desired trait in future generations by repeatedly crossing offspring back with a parent or parent line?
Why might a plant breeder use controlled crosses rather than allowing plants to self-pollinate?
Which observation would best show that a selective breeding program is effective after several generations?
Why is genetic variation important for the success of selective breeding programs?
Why can selecting for a single extreme trait (for example maximum size) lead to poorer health in animals?
Why might selective breeding take many generations to achieve a strong improvement in a complex trait?
Which advantage is commonly achieved by selective breeding of crop varieties for farmers?