Review and quiz
Download
1 / 48

Review and Quiz - PowerPoint PPT Presentation


  • 110 Views
  • Uploaded on

Review and Quiz. Unit 4 Evolution. 1. What are the 4 requirements for Natural selection?

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Review and Quiz' - lucus


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Review and quiz

Review and Quiz

Unit 4

Evolution


Review and quiz

  • 1. What are the 4 requirements for Natural selection?

  • 2. Using the field mouse as an example, a brown mouse lives in an area, explain using as many of your vocabulary terms as possible, how a change to the environment may lead to a change in their fur color over time. Underline each vocabulary term you correctly use in your explanation.

  • 3. If I find out 2 organisms have homologous structures, what can I infer?

  • 4. If I find out 2 organisms have analogous structures, what can I infer?


1 what are the 4 requirements for natural selection
1. What are the 4 requirements for Natural selection?

  • Nature selects the traits best suited for survival based on the following criteria:

  • 1. organisms in a population are naturally different from each other.

  • 2. the differences are inherited from their parents and can be passed on to their offspring.

  • 3. Populations tend to overproduce, there is not enough food or resources for the number produced leading to competition

  • 4. Some of the variations provide an advantage to the ability to survive and reproduce more offspring compared to the others with out that variation.


Review and quiz

  • 2. Using the field mouse as an example, a brown mouse lives in an area, explain using as many of your vocabulary terms as possible, how a change to the environment may lead to a change in their fur color over time. Underline each vocabulary term you correctly use in your explanation.

  • Camouflage, fitness, natural selection, etc…


Review and quiz


Review and quiz


Review topics
Review topics what can I infer?

  • Law of superposition!

  • What is it and what can we learn from it?


Review and quiz


Review and quiz


Review and quiz


Origin of life primordial soup or chemical evolution theory
Origin of life/ primordial soup geologic time period to another? Hint what happened at the end of each era?or chemical evolution theory

  • The most likely order of events for the origin of life in the oceans of early like is…


Primordial soup chemical evolution
Primordial soup/ Chemical evolution geologic time period to another? Hint what happened at the end of each era?

  • abiotic synthesis of amino acids and other organic molecules

  • synthesis of proteins

  • development of a genetic code ( RNA)

  • Cell membranes/ evolution of cells


What did miller and urey do
What did Miller and Urey do? geologic time period to another? Hint what happened at the end of each era?


Miller and urey
Miller and Urey geologic time period to another? Hint what happened at the end of each era?

  • Did an experiment to try to determine what the earth’s early conditions were like and if they could recreate them and form life!


Were the first cells on earth prokaryotic or eukaryotic how do we know
Were the first cells on earth prokaryotic or eukaryotic? geologic time period to another? Hint what happened at the end of each era?How do we know?


First life was prokaryotic single celled
First life was prokaryotic single celled! geologic time period to another? Hint what happened at the end of each era?

  • Fossil evidence shows the first cells were like current Archaebacteria.

  • Archaebacteria thrive in extreme environments of intense heat or pressure, and microfossils suggest early life forms lived in volcanic environments.


Cyanobacteria
cyanobacteria geologic time period to another? Hint what happened at the end of each era?

  • cyanobacteria contain green pigments and had no nucleus.

  • Are they prokaryotic or eukaryotic?

  • With green pigment, what could they likely do?

  • What gas did they likely give off?

  • What layer of the early earth atmosphere did this produce?

  • What did this allow to happen?


Review and quiz

  • cyanobacteria geologic time period to another? Hint what happened at the end of each era? contain green pigments and had no nucleus.

  • Are they prokaryotic or eukaryotic?

  • With green pigment, what could they likely do? Photosynthesize

  • What gas did they likely give off? oxygen

  • What layer of the early earth atmosphere did this produce? ozone

  • What did this allow to happen? Life to move out of the oceans and on to the land!


Endosymbiont theory
endosymbiont geologic time period to another? Hint what happened at the end of each era? theory

  • What is it?

  • What is the evidence for it?

  • What 2 organelles are most likely formed by this process?


Review and quiz

  • What is it? geologic time period to another? Hint what happened at the end of each era?How eukaryotic cells developed by prokaryotic engulfing each other and living in a symbiotic relationship.

  • What is the evidence for it?

  • Double membranes ( due to phagocytosis of one cell by another), own circular DNA, replicate, ribosomes…

  • What 2 organelles are most likely formed by this process?

  • Chloroplasts and mitochondria


Age of fossils
Age of fossils geologic time period to another? Hint what happened at the end of each era?

  • What are these?

  • What information do they give us?

  • Relative age:

  • Absolute age:


Age of fossils1
Age of fossils geologic time period to another? Hint what happened at the end of each era?

  • What are these?

  • What information do they give us?

  • Relative age: the position of the rock layer

  • Absolute age: radiometric dating


What is the currently accepted theory of evolution
What is the Currently geologic time period to another? Hint what happened at the end of each era?accepted theory of Evolution?


Currently accepted theory of evolution
Currently accepted theory of Evolution geologic time period to another? Hint what happened at the end of each era?

  • Evolution occurred due to random mutations leading to variations selected by nature to pass on to the next generation.


What is directional selection
What is directional selection? geologic time period to another? Hint what happened at the end of each era?

  • Can you give an example of how it would look on a graph?


Directional selection
directional selection geologic time period to another? Hint what happened at the end of each era?

  • When a population is moving in one direction due to the environment selecting for one genotype over another.

  • In this case for the darker color


Review and quiz


Mimicry vs camouflage
Mimicry VS geologic time period to another? Hint what happened at the end of each era?camouflage

  • Mimicry involved looking like a specific species to avoid being eaten or harmed.

  • Camouflage is a way to hind in your environment.

  • So are stick bugs using mimicry or camouflage?

  • Is the viceroy butterfly using mimicry or camouflage?


Natural selection and evolution
Natural selection and evolution geologic time period to another? Hint what happened at the end of each era?

  • How are they related?


Review and quiz



Homologous
Homologous that have them?

  • Homologous structures indicate a common ancestor

  • Like ?


Analogous structures
Analogous Structures that have them?

  • Indicate no common ancestor!

  • But a common environment….convergent evolution due to similar environmental situations like water or a need to fly.

  • Insect wings and bird wings. A fish fin and a whale flipper.



Vestigial left overs
Vestigial “left overs” that have them?

  • Vestigial structures point to a common ancestor.

  • Structures that have gotten smaller but show that they were once there and are no longer being used…show relationships.


Hardy weinberg principle
Hardy-Weinberg principle that have them?

  • Populations in genetic equilibrium.

  • Are the gene frequencies changing?


Review and quiz


Biochemical evidence
biochemical evidence that have them?

  • When we compare the similarities of DNA and gene sequences for specific proteins between different organisms we get biochemical evidence.

  • The more closely related the less differences there are in the gene sequences.

  • Such as comparing DNA sequences or the amino acid sequence of a protein.


Primates
Primates that have them?

  • Show an increased brain cavity size over time.

  • This correlates with an increase in brain size and complex thinking.


Primates1
Primates that have them?

  • Forward facing eyes provide?

  • A prehensile tail is needed for what?


Primates2
Primates that have them?

  • Forward facing eyes provide?

  • excellent depth perception, like what was needed for swinging from tree to tree!

  • A prehensile tail is needed for what?

  • Living in a tree! Holding on!


Australopithecus
Australopithecus that have them?

  • What did “Lucy” teach us?


Australopithecus1
Australopithecus that have them?

  • “Lucy”indicatesthat bipedalism evolved before large brains!

  • Kind of the missing link.


Review and quiz
HOMO that have them?

  • development of culture sets apart

  • Homo sapiens sapiens from the earlier ancestors to modern man.


Fitness
Fitness that have them?

  • Why do some organisms survive and others don’t?


Fitness1
Fitness that have them?

  • Why do some organisms survive and others don’t?

  • they have a natural variation that allows them to survive and reproduce better than the other organisms.


Genetic drift
Genetic Drift that have them?

  • Random. By chance

  • Founder effect and bottle neck are examples.

  • Does genetic drift effect small or large populations the most?


Review and quiz