BIO

Question 1

What hap[pened 3500 Mya?

Answer 1

First Prokaryotes.
Bacteria in Mats Stomatolites

Question 2

What happened 2000 Mya?

Answer 2

First Eukaryotes

Question 3

What happened 1200 Mya?

Answer 3

First multicell Eukaryotes

Question 4

530 Mya ?

Answer 4

Cambrian Explosion
A large collection of organisms in the fossil record resembling contemporary animals

Question 5

500 Mya

Answer 5

Land Colonized?

Question 6

What happened 65 Mya?

Answer 6

Cretaceous mass extinction.
Asteroid hit earth and killed off dinosaurs.
SUPPorting evidence iridium and shocked quartz

Question 7

Adaptive Radiation?

Answer 7

Periods of Evolution where many groups form new species.
Happens often after extinction events due to open niches
Dissapearance of dinosaurs allowed for mammals to fill niches

Question 8

What is Homology?

Answer 8

Homology is the sharing of characteristic between species from a common ancestor.
Bones in seal and human hind quarters

Question 9

What is Analogous traits

Answer 9

Traits and unique structures that are similar however are from different ancestors. Example of Convergent eve;ution.

Question 10

What are 4 lines of evidence that support evolution?

Answer 10

Direct Observatuion
Homology
Fossil Record
Biogeography

Question 11

What is a species?

Answer 11

Species are groups of individuals who can interbreed and produce viable offspring

Question 12

What is a population?

Answer 12

A group of localized individuals of same species that interbreed

Question 13

What are the three domains of life?

Answer 13

Bacteria, Archaea (Prokaryotes), and Eukaryotes

Question 14

What kingdoms are in the Eukaryotes Domain?

Answer 14

Animal Kingdom
Plant Kingdom
Kingdom Protista
Fungi Kingdom

Question 15

Why does Evolution Occur?

Answer 15

Unequal success of offspring due to suitability of traits to enviroment

Question 16

Lung fish is what?

Answer 16

An ancestor of terrestrials that breath air.

Question 17

What is an endemic species?

Answer 17

Species that cannot be found anywhere else in the world. Islands have many. Galapagos finches and cormorant

Question 18

Appearance of life stages?
1st

Answer 18

1 Abiotic Synnthesis of small organic molecules
2 Join small molecules to create Macromolecules
3 packaging molecules into protocols droplet membranes maintain internal chemistry differing from surroundings
4 Origin of self replication

Question 19

What is an Allele?

Answer 19

An alternate version of a gene that may produce distinguishable phenotypic effects.

Question 20

What is the smallest unit that can evolve?

Answer 20

Population

Question 21

What is Genetic Drifgt?

Answer 21

Chance events that cause unpredictable fluctuations in alleles frequencies from one generation to the next

Question 22

What is Gene Flow?

Answer 22

The Transfer of alleles from one population to another.

Question 23

Mutation is what?

Answer 23

New Alleles through gene mutations.

Question 24

Phenotype means what?

Answer 24

The change you can see.

Question 25

Genotype is what?

Answer 25

The genetic makeup of an organism.

Question 26

Sexual Reproduction does what to Alleles?

Answer 26

Shuffles them into new combos This is more important then mutations

Question 27

Gene pool?

Answer 27

Consists of All Allele in Loci in a population

Question 28

Hardy Weinberg principle describes what?

Answer 28

Measures for populations not evolving

Question 29

5 conditions for non evolving populations

Answer 29

No migration, no mutations, no selection, random mating, large population

Question 30

What are the three main factors that alter allele frequency?

Answer 30

Natural Selecion- inheritable traits that better fit the enviroment are more likely to create offspring Genetic Drift- Something unpredictable happens and causes only small population to be left with certain alleles to reproduce

Question 31

What is Speciation?

Answer 31

An evolutionary process in which one species splits into two.