Classification

Question 0

How does biochemical help in classification?

Answer 0

Looks at the similarities in proteins and DNA - the more closely related organisms will have more similar molecules

Question 1

What are the 5 types of classification?

Answer 1

Biochemical
Anatomical
Embryological
Immunological 
Behavioural

Question 2

How to test biochemical?

Answer 2

DNA hybridisation

Question 3

How does DNA hybridisation work?

Answer 3

DNA taken from 2 different species
Strands mixed together
Pair up with complementary strands
The GREATER THE DEGREE of hybridisation the more similar they are: more heat needed to separate the DNA strands = more matches there are = more closely related

Question 4

How does anatomical work?

Answer 4

More similarities in structure and function of different bldg parts

Question 5

How does Embryological work?

Answer 5

Similarities in the early stages of an organism’s development
- evidence that they have evolved from a common ancestor

Question 6

How does immunological work?

Answer 6

Similarities in the immune system, e.g. Antibodies and antigens

Question 7

How does behavioural work?

Answer 7

The behaviour of organisms, e.g.humans are classified as primates: increased dependency period, social groups, vocalisation & facial expressions