Topic 2

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

-Multicellular
-Heterotrophs
-Eukaryotic
-Mammals, Fish, Birds, Reptiles, Worms, etc.

-Multicellular
-Phototrophs
-Eukaryotic
-Reproduce Sexually & Asexually
-Cell walls contain Cellulose

-Multicellular
-Heterotroph
-Absorb nutrients
-Contain Chitin
-Fungi bring about decay, and return nutrients back to the soil

-Eukaryotic, Single cell
-Some auto, some heterotroph
-Basically anything/everything

-Bacteria and cyanobacteria
-Contains peptidoglycan

-Does not contain peptidoglycan
-Live in hard environment

-Changes in sex cellsametes cause inheritable mutations
-Random changes in a DNA sequence
-Most are Harmful or Neutral

-Asexual in 1 individual, clonging themselves
-Sexual is 2 individuals, sharing genes/DNA
-Each parent contributes a copy of each gene to offspring
-More mates means more variety in offspring

Study of fossil remains of skeletons, eggs, nests, etc.
1.Provide variety of species at different period of time
2.Complexity of organisms
3.Living species and closelt matches fossils are located in the same geographical area.

Study of geogrpahic distribution of life on earth.
Continental drift spread species apart, and they evolved in isolation

Similar structure but different functions.

Similar functions but different structures

No useful function.
The organ served a function at one point but not anymore

DNA sequences
Organisms are more closely related if their DNA sequence is more similar

Process of humans selecting and breeding individuals with desired traits
If humans can do it in short period of time, then plants can do it over millions of years

Theory of large evolutionary changes to the accumulation of many small ongoing changes & processes

Slow, incremental changes occur
Commonly accepted until mid 20th century

Rapid spurts of change
New species don't change significantly overtime
States that speciation occurs in small populations
Fossils cannot be immidiate

Drive to improve through aquired traits
As environment changed, developing newetter traits became more common

Different traits provide different chances of success
Favourable traits survived longer
Orgin of a variety in species

4 nitrogen bases