Natural Selection
How many types of evolution is there?
2
what pattern of evolution has to do with death?
extinction
fossils of ancient organisms are found in layers of rock
Fossil evidence
A phylogeny tree shows what about diffrent species?
how they are related thru evolution
what does it mean when a species is extinct
all of em have died
What are the Types of evolution?
Micro and macro
what pattern of evolution occurs when insects polinate flowers
coeveolution
similar bones in a human and a monkey
homolugus structures
On a phylogenic tree, what does a branch point represent?
a common ancester that was split into 2
What is one main cause of extinction today
habitat loss
Who invented the idea of NS (smart for Natural Selcection)
Charles Darwim (CD for smart)
What is speciation?
The formation of a new species by evolution from a pre-existing species.
vestigal structures
If two animals are close together on a phylogeny tree, what does that usualy mean
they share a recent ancestor
What do we call a species that is close to becoming extinct
endangered
Name atleast one mechanism of microevolution
Mutation
natural selection
genetic drift
gene flow
non random mating
What is the difference between gradualism and punctuated equilibrium?
Gradualism happens over time, while punctuated equilibrium happens a lot quicker
DNA comparisons show how similar species are
molocule evidence
What kind of data do scientist use to build phylogenic trees
fossils
body structures
dna
How can humans help prevent extinction
protect habitats
What is genetic equilibrium
When there are no changes in the allele frequencies in a population over time
What is the difference between divergent evolution and convergent evolution?
Convergent evolution shows the same traits as other animals, but they are not related ancestrally. Divergent evolution shows traits similar to animals that all come from the same common ancestor.
early embryos of many animals look alike
embryological evidence?
Why is phylogeny helpful for bioligy students?
it helps us understsnd our past
What is a famous example of an extinct animal
the dodo bird