Classification Flashcards
What are Individual classified by
Physical or biochemical similarities
Order of classification
Kingdom
Phylum
Class
Order
Family
Genus
Species
Courtship behaviour
Behaviour that animals exhibit to attract a mate
So they can reproduce
Binomial system
First name is genus
Second name is species
Same genus = close relation
Why do different species look similar
- Live in a similar environment
- Have similar secelction pressures
- Similar alleles due to selection
- Produce same proteins so have similar characteristics
What is a hierarchy
Smaller groups arranged within larger groups
No overlap between groups
Why do we need a system to organise species
Helps us understand relationship between organisms
Keep track of changes
System is universal
Modern ways of classification
DNA sequences
Amino acid sequence
mRNA sequence
= more similar they are the more closely related
Immunological - comparing similarity in self antibody shape
= more similar more closely related
Phylogeny
Arranges based on evolutionary origins/ relationships
How closely related they are
Evolution from shared command ancestor
= phylogenic tree
What is a species
Can produce fertile offspring
Why do some species look similar
- Same environment
- Same selection pressure
- Same alleles
- Same proteins coded for so similar characteristics
Why do we order species
Keep track off changes
System is universal
Doesn’t overlap
Smaller groups put into larger groups
How does courtship behaviour increase mating success and survival off offspring
Display behaviour when sexually mature and fertile
Ritual forms pair bonds
Allows female to select strong and healthy male
The scientific name
Binomial name
