Biology Topic 4
- Created by: meaticus
- Created on: 13-10-17 13:15
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- Biology Topic 4
- Evoloution by Natural Selection
- Survival of the fittest
- Only the most adapted survive
- Competition for resources
- Arise through mutations
- Survival of the fittest
- Evidence of Evoloution
- Lucy
- One of the first big discoveries, showed how early humans evolved from apes
- Leakey fossils
- Series of fossils that kick started the search for human evoloution
- Stone tools
- Sediment around them allows them to be dated
- Untitled
- Lucy
- Classification
- Started as 5 kingdoms
- DNA analysis lead to 3 domains
- Archaea
- Bacteria
- Eukarya
- Grouped in: Kingdom, Phylum, Class, Order, Family, Genus and Species
- Genetic Modification
- Crops are modified for many reasons
- Increased yield
- Resistance to pests
- Resistance to certain weather
- Desired traits are taken from desired organisms
- Crops are modified for many reasons
- Tissue Culture
- Plants can be grown
- Leaf tissue is taken and grown into hundreds of clones
- Used for medical research
- Animal, tumour, cells are grown and researched to test and develop medicine
- Plants can be grown
- Evoloution by Natural Selection
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