Module 4 - Species and taxonomy Flashcards
What is meant by phylogeny?
This is the study of evolutionary history
How does a phylogenetic tree show relations between organisms?
The first branch is the common ancestor of all organisms, The next closest branch is the next organism to evolve from the common ancestor
What is meant by taxonomy?
The science of classification and involves naming organisms and organising them into groups.
What is the order of hierarchy?
Domain, Kingdom, Phylum, class, order, family, genus, species
What is the definition of species?
A species is a group of similar organisms able to reproduce to give fertile off spring
What is the binominal naming system?
This is the system of which scientists give organisms names.
How is the name written when we use a binominal naming system
The first name is a Genus and the second name is the species of the organism
What is courtship behaviour?
This is when species of the same type have specific behavioural adaptations that allows organisms to attract a mate
Why is it important that the same species is attracted to one another when they undergo reproduction?
So that fertile offspring can be reproduced.
What are 2 examples of courtship behaviours carried out by organisms?
Fruit flies give of pulses of light.
Male peacocks show of their colourful tails.
What are the 3 ways a scientist can clarify evolutionary relationships between organisms?
Genome sequencing, Amino acid sequencing and immunological sequencing
Explain what genome sequencing is?
Scientists can compare the base sequences of one organism to another. One with a relatively similar sequence may be considered as a similar specie
What is meant by immunological comparisons?
Similar proteins bind to the same antibodies because the tertiary structure of that protein may produce an active site that can bind to antibodies or substrates from another organism.
Taxa in order (Delicious King Prawn Curry Or Fat Greasy Sausages)
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
What does it mean if all field mice have names that start with Apodemus
Same genus
Same evolutionary origin/ common ancestor
