Classification (OCR A-Level Biology A): Flashcards
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Practise the cards
10 cards from this deck
Molecular phylogeny
Molecular phylogeny
Uses molecular data to determine evolutionary relationships
Fungi relationship revealed by molecular data
Fungi relationship revealed by molecular data
More closely related to animals than plants
Antibody method detects
Antibody method detects
Similarities between proteins in different species
Higher precipitation meaning (antibody test)
Higher precipitation meaning (antibody test)
Greater similarity between proteins
Why cytochrome c useful for comparison
Why cytochrome c useful for comparison
Occurs in many organisms, ~100 amino acids, key role in respiration
Sequence differences indicate
Sequence differences indicate
Evolutionary distance - fewer differences = recent common ancestor
DNA sequencing advantage: degenerate code
DNA sequencing advantage: degenerate code
Reveals hidden differences in identical amino acid sequences
Silent mutations
Silent mutations
DNA changes producing same amino acid due to code degeneracy
Why rRNA genes valuable
Why rRNA genes valuable
Change slowly & found across all life forms
Gene barcoding
Gene barcoding
Using gene sequences as unique species identifiers