Variation and Evolution (LC 2026) (Leaving Cert Biology): Flashcards
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Practise the cards
9 cards from this deck
Definition of variation
Definition of variation
Differences between members of a species
Can evolution occur without variation?
Can evolution occur without variation?
No, variation is required for evolution
Two causes of variation
Two causes of variation
Sexual reproduction and mutations
How sexual reproduction causes variation
How sexual reproduction causes variation
Through meiosis and fertilisation
Two meiosis processes causing variation
Two meiosis processes causing variation
Crossing over and random assortment of chromosomes
What fertilisation does for variation
What fertilisation does for variation
Combines genetic material from two parents
Definition of mutation
Definition of mutation
Change in amount or structure of DNA
Molecule affected in a mutation
Molecule affected in a mutation
DNA
Cause of variation (not mutation)
Cause of variation (not mutation)
Sexual reproduction