BS2 - Similarity and kinship

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Today's lesson

1. HW review
2. Test Yourself Online - 3.1
3. Basics 2: Similarity and Kinship
4. You know the difference between species and breeds
5. You know how groups depend on similar features

HOMEWORK CHECK

Write the sentence you use to remember all the classification group names.

Similarity and kinship

what do they mean?

Kinship of species

• The amount you are related to a common ancestor

Is the following statement true or false?

Cebochoerus is the ancestor of the whole pig family.

Basics 2 - Similarity and kinship

• kinship = verwantschap 
• Organisms from the same genus                                                     have a lot of similarities
• example: Lion and a tiger
• Organisms from the same kingdom have fewer similarities
• example: Fish and a zebra

Species?

• What is a species?
• Organisms that reproduce together and make fertile offspring. 
• They make babies that can                                                                have babies.

Breed?

Evolution

• Organisms that belong to the same species                            have a lot of similarities
• Variation
• Selection - a bird can not see the dark snails so eats the light ones first. The dark shells survive and make babies. Become more common.
• Evolution

Kinship

Animals with a close common ancestor 

are closely related 

• More closely related means 

       more similarities in DNA                                             overeenkomst in DNA

common ancestor of Tuna, salmander, turtles and leopards

Common ancestor of all these groups

Common ancestor of turtles and leopard

Phyla of the animal kingdom

• Sponges
• Cnidarians
• Molluscs
  
• Arthropods 
• Echinoderms
• Vertebrates 

Classification groups:

today we are going to discuss the phyla of the animal kingdom

I-Book pages 10-13

SYMMETRY

How do vertebrates move?

classification of animals

Animals are divided into invertebrates (ongewervelden) en vertebrates (gewervelden).

Today focus:

 vertebrates

To do: 3.2 and 3.3