4 Genetics - Classification

Question 1

Who came up with the classification system?

Answer 1

Carl linneaus

Question 2

Why do we classify organisms?

Answer 2

• makes identification of organisms easier
• predicts characteristics
• identifies evolutionary links

Question 3

Bimomialism

Answer 3

‘Genus’ ‘species’

Question 4

What is taxonomy?

Answer 4

A hierarchal grouping system where each group is subdivided into smaller groups

Question 5

What is phylogeny?

Answer 5

The evolutionary relationship between organisms

Question 6

What are some examples of courtship behaviour?

Answer 6

• Hormones = pheromones in deer
• Sound = bird songs
• Visual displays = sand display in pufferfish, feathers in peacocks
• Building nests/ shelters = birds

Question 7

Why are courtship behaviours important?

Answer 7

Ensures sucessful reproduction, compatanility between organisms and makes sure they are the same species

Question 8

What are the different types of classification?

Answer 8

• Artificial = based on physical characteristics
• Phylogenetic = based on shared common ancestors, uses a hierarchy, Kingdom Phylum etc.

Question 9

What is the phylogenetic classification hierarchy?

Answer 9

Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

Question 10

What are the 3 main domains?

Answer 10

Archea, Bacteria and Eukarya