Phylogeny Flashcards
1
Q
What is Phylogeny?
A
- Classifying organisms into groups based in their evolutionary relatedness.
2
Q
What is Phylogeny the principle of?
A
- modern classification
3
Q
What are old system grouped organisms based of?
A
- observable physical characteristics
4
Q
Give an example of Phylogeny?
A
e.g. Placental Mole and Marsupid Mole - they look similar but not closely related
5
Q
What is the Phylogenetic specie concept?
A
They are the same species it:
- they form a monophyletic group (tip of phylogeny)
- the genetic differences between individuals must be small
- there is gene flow between individuals (can have a wide variety of phenotype)
6
Q
What evidence is used for phylogeny? - Genetics
A
- Genetics e.g. DNA/RNA
- They compare base sequence - the higher the percentage match the more closely related they are
7
Q
What evidence is used for phylogeny? - Biochemistry
A
- Biochemistry e.g. cytochrome C antibodies/ enzymes
- DNA -> mRNA -> protein tertiary structure
- compare 3 structure -> more similar = more related
8
Q
What evidence is used for phylogeny? - Anatomy
A
- observable physical characteristics
9
Q
What are examples of evidence used for Phylogeny?
A
- Genetics
- Biochemistry
- Anatomy
- Behavioural
- Embryology
10
Q
What evidence is used for phylogeny? - Embryology
A
- how the embryo develops
