Evolution: intro & natural selection

• Biologie
• Middelbare school
• vwo
• Leerjaar 4

Evolution

Chapter 

Lesson 1: introduction into evolution & natural selection

Previous lesson

• Miller-Urey experiment
  
• Endosymbiosis theory

Why did I ask these questions on sickle cell anaemia and malaria and what does this have to do with evolution?

Learning objectives

• You can describe evolution
• You can describe natural selection
• You can explain the difference between evolution & natural selection
• You can explain the difference between natural & artificial selection

While watching the next video, answer the following questions:

• What is the definition of evolution?
  
• What is a mutation and what is the role of mutations in evolution?
  
• What is the smallest unit that can evolve?
  

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While watching the next video, answer the following questions:

• What is different between artificial selection and natural selection?
• What is the best description of natural selection?
  
• What is required for natural selection to occur?
• Describe natural selection in four steps!

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Darwin - Origin of species

“ As many more individuals of each species are born than can possibly survive, and as, consequently, there is a frequently recurring struggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving and thus be naturally selected. From the strong principle of inheritance, any selected variety will tend to propagate its new and modified form.”

Learning objectives

• You can describe evolution
• You can describe natural selection
• You can explain the difference between evolution & natural selection
• You can explain the difference between natural & artificial selection

Work to be done

Assessment Questions Glencoe pg 445: Q 1-7.

Biozones 206-208.

What is biodiversity?

Biodiversity

Term to describe the variety of life on earth

You can also talk about the biodiversity in an area, meaning all the life in that area

What is a species?

Memphis Depay

Species

A group of organisms with similar features which can interbreed to produce fertile offspring, and which are reproductively isolated from other species

Great similarity between species implies

1. Recent common ancestry
2. Remote common ancestry
3. Succesfull reproduction
4. Extinction

Binomial naming system

- Scientific name is the same across the world to avoid confusion

- Each name consists out of
two parts: genus and species 

- Only if both parts are the
same are they the same species

What is the human genus name?

1. Homo
2. sapiens
3. neanderthalensis
4. Vertebrate

Homo sapiens and Homo erectus belong to the same genus

1. True
2. False

Homo sapiens and Homo erectus belong to the same species

1. True
2. False

Put in the right order of natural selection

Adaptation

Selection

Variation