Evolution Flashcards
Explain mutations
Some harmful or life threatening
Some beneficial and allow evolution to occur
Define Natural selection
Select best adapted individuals
Survival of fittest
If species separate what happens
Evolution can occur
Example - continental drift
How to identity same species
If they can reproduce
Fertile offspring
How evolution can be proved
Fossil records
Comparing embryos
Comparing limbs or skeletal structure
Geographical distribution
Suggest common ancestor or all related !!
Define speciation and steps involved
Process that leads to creation of new species
Step one - population and variation exists
Step two - separation of population
Step three - each population experience different environmental conditions
Define artificial selection
Humans select phenotypes
Who discovered evolution
Charles Darwin
Alfred Wallace
What is evolution
Change in the heritable traits within a population across generations
Why does evolution occur
Due to mutations
Combination of genetics and environmental factors determine characteristics