Selective Breeding (AQA GCSE Biology): Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is selective breeding?
What is selective breeding?
Humans choosing organisms to breed for desired traits
Which is an example of a desirable characteristic in selective breeding?
Which is an example of a desirable characteristic in selective breeding?
Plants with disease resistance
How long has selective breeding been practised?
How long has selective breeding been practised?
Many years since domestication began
When is the selective breeding process complete?
When is the selective breeding process complete?
When all offspring have the desired trait
What major problem can selective breeding cause?
What major problem can selective breeding cause?
Inbreeding
Why does selective breeding reduce the gene pool?
Why does selective breeding reduce the gene pool?
Closely related individuals are bred
What happens when the gene pool is reduced?
What happens when the gene pool is reduced?
Number of different alleles reduces
What risk does a reduced gene pool create for a species?
What risk does a reduced gene pool create for a species?
Extinction if environment changes
Why does the same genetic make-up increase extinction risk?
Why does the same genetic make-up increase extinction risk?
Fewer organisms have survival advantage
Why does a small gene pool lead to more genetic defects?
Why does a small gene pool lead to more genetic defects?
Recessive characteristics appear more often