Selective Breeding (AQA GCSE Biology Combined Science): Quizzes
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Practise the questions
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 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 happening?
How long has selective breeding been happening?
Many years
In selective breeding, when should the process be stopped?
In selective breeding, when should the process be stopped?
When all offspring have desired trait
What problem can selective breeding lead to?
What problem can selective breeding lead to?
Inbreeding
What does inbreeding result in?
What does inbreeding result in?
Reduction of the gene pool
Why does the gene pool reduce in inbreeding?
Why does the gene pool reduce in inbreeding?
Organisms mostly have the same alleles
What could happen if the environment changes in a selectively bred population?
What could happen if the environment changes in a selectively bred population?
Species could become extinct
Why does a reduced gene pool increase extinction risk?
Why does a reduced gene pool increase extinction risk?
Lower chance of survival advantage
What is more likely to occur in offspring from a small gene pool?
What is more likely to occur in offspring from a small gene pool?
Genetic defects from recessive traits