Flashcards in 3.1.3 Selective Breeding Deck (11)
What do we call it when a farmer chooses which animals to breed?
Selective Breeding OR Artificial Selection
Another name for a feature is a...
Which characteristics might a farmer want to selectively breed into his cattle (cows)?
Lots of milk
Lots of meat
Which characteristics might a farmer want to selectively breed into his strawberries?
Lots of strawberries
Describe the process of selective breeding.
1. Decide which characteristics are important.
2. Select parents that have this characteristic.
3. Breed these individuals.
4. Select the best offspring and breed them again.
5. Repeat for many generations.
What is the main disadvantage of selective breeding?
You make all of the organisms pass on the same genes so you lose variation in a species.
Increase the chances of the species being wiped out by disease.
What is meant by variation between organisms?
Differences between organisms.
Describe the advantages of selectively breeding dogs
Describe the disadvantages of selectively breeding dogs
Health problems e.g. Labradors have hip problems, Pugs have breathing problems.
Inbreeding in pedigree dogs results in...
a lower life expectancy compared to cross bred dogs.