12.1 Flashcards
(10 cards)
What is evolution?
descent with inherited modification
What are the 3 requirements for natural selection
preexisting genetic variation, slightly environmental benefits, allele increase over time.
What are 3 types of selective pressures?
Physiological selection, predator selection, sexual selection
What are the the 5 fingers of evolution
Shrinking population, mating, mutation, movement, adaptation
Where does the new allele come from in a population?
mutation during DNA replication
Who is your closer relative - sister or aunt
sister - share parent
What does the Principle of Parsimony say?
If two explanations that account for all the facts, the simpler one is more likely to be correct.
What is fitness?
amount of fertile offspring
What is an adaptation?
A genetic variation that increases fitness
