1. CB4 – Natural Selection & Genetic Modification (p32-38)
Selective Breeding (p36)
Darwin’s Theory of Evolution (p32-34)
How is selective breeding carried out?
1. Decide which ______________are important
2. Choose _____________ that show these characteristics
3. Select the best ____________ from parents to breed the next generation
4. Repeat the process over many ___________
Name an advantage and a disadvantage of selective breeding:
What is natural selection? (list 4 bullet points) -
What is evolution?
How do stone tools provide evidence for human evolution?
How does natural selection lead to evolution?
How is Darwin’s theory supported by evidence?
Classification (p35)
Using ‘lion’ as the species, provide an example of each
classification stage: 1.
Genetic Engineering (higher only) - (p37)
Fill in the gaps…. 2.
1. DNA ___________ from desired cell.
2. E_________ cut out desired gene
1. What are the three large groups of domains? -
2. What are the five groups in a kingdom? -
3. Gene inserted into bacteria’s ___________
Lion
4. Bacteria r_________ and a large number of bacteria has the new characteristic

2. CB4 – Natural Selection & Genetic Modification (p32-38)
Selective Breeding (p36)
Darwin’s Theory of Evolution (p32-34)
How is selective breeding carried out?
1. Decide which ______________are important
2. Choose _____________ that show these characteristics
3. Select the best ____________ from parents to breed the next generation
4. Repeat the process over many generations
Name an advantage and a disadvantage of selective breeding:
What is natural selection? (list 4 bullet points) -
What is evolution?
How do stone tools provide evidence for human evolution?
How does natural selection lead to evolution?
How is Darwin’s theory supported by evidence?
characteristics
parents
Variation
Competition
Survival of the fittest
Passing on genes
offspring
A gradual change in characteristics of a species over time.
Stone tools dates back to about 3.3 million years ago, so scientists can work out the ages of different layers of rock, assuming that the stone tool is equal in age.
Advantage: Better characteristics and higher meat yield
Disadvantage: Reduces variety in organisms, one disease could wipe all species out, cause health problems
By chance, the variations of some individuals make them better at coping with the change than others, and more likely to survive.
Classification (p35)
Bacteria provide evidence as random mutations develop in their DNA. This causes antibiotic resistant genes to be passed on (natural selection)
Using ‘lion’ as the species, provide an example of each
classification stage: 1.
Eukarya
Genetic Engineering (higher only) – (p37)
Fill in the gaps…. 2.
Animal
1. DNA ___________ from desired cell.
removed
Vertebrate
2. E_________ cut out desired gene
nzymes
Mammal
Carnivorous
Cat
3. Gene inserted into bacteria’s ___________
DNA vector
Big Cat
Lion
4. Bacteria r_________ and a large number of bacteria has the new characteristic
eproduce