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Organisms with desirable characteristics can be selectively bred by humans. Dogs and cows are often selectively bred. Genetic modification involves the movement of genes from one organism to another.
What is selective breeding?
Selective breeding is when humans breed plants and animals to develop certain genetic characteristics
Selective breeding is when humans breed only plants to develop certain genetic characteristics
Selective breeding is when humans breed only animals to develop certain genetic characteristics
Which of these is a characteristic that humans have selectively bred for?
Horses with a slow pace
Wheat plants with smaller grain
Sheep with high quality wool
New crop varieties bred by selective breeding will show which economically important characteristic?
Reduced food quality
What effect does selective breeding have on the population?
It increases variation
It reduces variation
It stops all variation
What is the term used to describe all the genes and their alleles found in a population?
The gene pool
Which of these is a risk associated with selective breeding?
Rare disease genes can be unknowingly selected as part of a positive trait
Animals can be bred that are less likely to cause harm
New varieties may be economically important
Which of these is true of genetic modification?
Genetic modification only affects bacteria
Genetic modification requires synthesised DNA
Genetic modification is the removal of a section of DNA from one organism to insert into the DNA of another organism
What is used to cut DNA during the process of genetic modification?
Which of these is used as a vector in genetic modification?
Which of these is a use for genetic modification?
Creating antibiotic resistance
Creating herbicide resistance
Creating insulin resistance