Selective breeding (AQA GCSE Biology Combined Science): Flashcards
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Selective breeding definition
Selective breeding definition
Process where humans choose organisms with desired traits to breed
Alternative name for selective breeding
Alternative name for selective breeding
Artificial selection
Time needed for selective breeding to work
Time needed for selective breeding to work
Many generations
First step in selective breeding process
First step in selective breeding process
Choose individuals with desired characteristic
Step 2 of selective breeding
Step 2 of selective breeding
Breed selected individuals together
Milk production change in cows 1957-2007
Milk production change in cows 1957-2007
More than doubled
Inbreeding definition
Inbreeding definition
When related animals breed together repeatedly
Three risks of inbreeding
Three risks of inbreeding
Inherited diseases, physical defects, weaker animals
Welfare issue in high milk-producing cows
Welfare issue in high milk-producing cows
Leg and udder problems
Why gene pool gets smaller in selective breeding
Why gene pool gets smaller in selective breeding
Only 'best' individuals selected for breeding