Classification Flashcards
How were organisms traditionally classified
It is due to similarities and differences in their observable characteristics e.g. this you can see
How has this changed
Technology has improved, this includes things you can see with a microscope ( cell structure )
What was the characteristics used to do
Classify organisms into the five kingdom classification system
They are first duchess in 5 groups, what are they
Animals, plants, fungi, prokaryotes and protoctist
What are examples of them
Animals-fish, mammals,reptiles, etc
Plants-grasses,trees,etc
Fungi-mushrooms,tools stools,Yeats
Prokaryotes-all single celled organisms without a nucleus
Protoctists-eukaryotic single celled organisms e.g. algae
What are the 5 kingdoms subdivided into smaller smaller groups that have common features?
Kingdom, phylum, class, order, family, genus
What’s wrong with the five kingdom classification stystem
It’s out of date but it is still used
Overtime, what has technology developed over time
our understandings of things like biochemical processes and genetics
Why has technology improved genetics and why is it important ?
It’s increased because we can determine the sequence of DNA bases in different organisms’ genes and compare them
How can we know when a gene is relayed to organisms
The more similar the gene the more related the organism
Has this changed the way organisms are classified
It’s been let to a bit of a rethink, as the three domain system of clsssifcitafyin by scientist Woese
What did Woese find was wrong
That some members of the prokaryote kingdom were not as closely related as he first thought
What then did Woese realise and start to propose
That the kingdoms should be split into two groups Archaea and Bacteria
What did Woese suggest how the organisms should be divided
They should be divided into three small groups called domains
What are the 3 domains
First:Archaea
Second:Bacteria
And the third domain Eukarya
