evolution Flashcards
define evolution
change over time
Darwinism
inherit a gene from parents that give you that trait
Lamarckism
if your parents do something you will be born w it too even if its not something they inherited
Darwin’s 4 principles of Natural Selection
More organisms are born than survive
There is a struggle for existence
Organisms share variation
Offspring inherit their parents characteristics
Define natural selection
Natural selection is when an organism is either strong enough to survive and reproduce or not and they js die
artificial selection
when an organism is picked by a human and made to breed with another to make the “perfect” organism
Homologous structures
same structure different use
Analogous structures
similar function different structure
Vestigial structures
when something that was useful a long time ago isnt useful anymore but still exist
true or false variation and overproduction is important so that a spices doesn’t go extinct
true
Behavioral
When a girl bird dosent like a the guy birds mating dance
Geographical
When an river separates a spices
Temporal
When some flowers bloom in April another the other in may
genetic drift
Genetic drift is unavoidable we cant stop it or start it
gene flow
Gene flow mixing populations tg