1
Q
define Phylogenetics
A
The study of evolutionary relationships
-Phylogeny: Evolutionary history of an organism
2
Q
Define phylogenetic tree
A
Branching diagram depicting evolutionary relationships among organisms based on genetics
3
Q
How is rRNA used for phylogenetics?
A
All organisms have ribosomes
- rRNA is essential
- rRNA is usually the same with in an organism
4
Q
what are conserved sequences?
A
They are segments of DNA that are similar/identical in between organisms
5
Q
How do we use RNA sequence
A
- Get organism
- Extract DNA
- Use PCR to amplify
- Use algorithms
- a set of rules to follow in calculations
6
Q
How are new species formed?
A
- Anagenesis: Evolution of an entire population to new species (gradual)
- Cladogenesis: Splitting of gene pool –> 2+ groups –> rise to at least 1 species
7
Q
define speciation
A
process by which 1 species –> 2+ species
-explains differences/similarity
Forms conceptual bridge b/w macroevolution and microevolution
