DUE TODAY DUE TODAY. HOMEWORK: Student Weekly Grade Tracking #25. CLASSWORK: Blood Typing Lab Ernie s Exit (Turn in) Admit Ticket

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1 Admit Ticket WOR KS HEE T Read Blood Types Sheet Complete Blood Type Worksheets DUE TODAY DUE TODAY HOMEWORK: Student Weekly Grade Tracking #25 CLASSWORK: Blood Typing Lab Ernie s Exit (Turn in) Agenda Item Agenda Item

2 DUE BLOCK DUE 2/27/17 CLASSWORK: OPEN BINDER/ NOTE TEST #4 HOMEWORK: Student Weekly Grade Tracking # Agenda Item Agenda Item DUE 2/27/17 Ernie's Exit CLASSWORK: GENETICS - THE SCIENCE OF HEREDITY Unit Exam Forensic Science Blood Typing Lab Activity Agenda Item T. Trimpe

3 The Crime Report A small pool of blood and a weapon was found near a garbage dumpster. After examining the area, the CSI on the scene discovered a body in the garbage dumpster and identified him as Earnest One-Eyed Earl. Earl had a wound to his chest that will be analyzed by the medical examiner. The CSI tested blood samples from the blood pool and the weapon at the crime scene. It was determined that it was human blood, but he needs to know the blood type to help identify if it was from the victim or the person who murdered him. He has come up with three suspects that either knew the victim or were seen in the area before the body was discovered. He would like to question them further while he waits for DNA test results. We will be determining blood types using Anti-A serum, Anti-B serum, and Anti-RH serum. Use the chart to help you determine the blood type of each sample and its Rh factor (+ or -). DIRECTIONS: Clumping = + (Positive) No Clumping = - (Negative) Blood Typing Test Step 1: Using your spot plate, fill 3 wells halfway full of blood. Step 2: Place 5 drops of the anti-a serum in the first well. Step 3: Place 5 drops of the anti-b serum in the second well. Step 4: Place 5 drops of the anti-rh serum in the third well. Type Reaction w/ Anti-A Serum Reaction w/ Anti-B Serum A + - B - + AB + + O - - Rh Serum - Clumping = Rh+ blood Follow your teacher s directions to complete the lab. Remember to be careful to prevent cross-contamination of the blood samples! Image: Step 5: Record your observations in the correct section on the back of the page and use the reaction chart at the top of this page to determine the blood type. Step 6: Complete the other sections using information from your classmates. Clumping = Positive Result Use + or to show the test results for each sample and then determine the blood type. Results + = Clumping - = No clumping Agglutination = Clumping = Positive Reaction Type Reaction w/ Anti-A Serum Reaction w/ Anti-B Serum A + - B - + AB + + O - - Rh Serum - Clumping = Rh+ blood A B Rh What is this person s blood type? Conclusion What do your results show? What would you do next in the investigation? Answer: A+

4 Exit Ticket WOR KS HEE T Ernie s Exit Blood Typing Lab Activity Questions Admit Ticket VIDE O CL IP Take notes on Natural Selection - Crash Course Biology #14 Video Clip BLOCK DAY Exit Ticket DISC U SS ION Small Group Discussion: What is natural selection? Give an example.

5 Learning Goals Darwin & Natural Selection 1. Define "Evolution" & "Natural Selection". 2. Describe the 4 steps of Natural Selection, giving an example of each. 3. Explain the importance of "Variation". 4. Does Natural Selection act on an organism phenotype or genotype? Explain! 5. List the 5 evidences that support the Theory of Evolution. Theory of Evolution Evolution: The process of change over time Specifically, a change in the frequency of a gene or allele in a population over time Charles Darwin Father of Evolution Proposed a mechanism for evolution, natural selection Darwin went on a 5-year trip around the world on the ship, the HMS Beagle As the ship s naturalist, he made observations of organisms in South America and the Galapagos Islands Wrote a book, Origin of the Species

6 Darwin s Finches Natural Selection Natural Selection: Organisms that are best adapted to an environment survive and reproduce more than others Darwin s Theory of Natural Selection occurs in four steps: Overproduction Variation Competition Selection

7 1. Overproduction 2. Variation Each species produces more offspring that can survive Each individual has a unique combination of inherited traits. Adaptation: an inherited trait that increases an organism s chances of survival What adaptations do you see? What adaptations do you see?

8 Why is Variation Important? Because the environment changes. The more variation within a species, the more likely it will survive EX: If everyone is the same, they are all vulnerable to the same environmental changes or diseases The more variation of types of species in an habitat, the more likely at least some will survive EX: Dinosaurs replaced by mammals 3. Competition Individuals COMPETE for limited resources: Food, water, space, mates Natural selection occurs through Survival of the fittest Fitness: the ability to survive and reproduce Not all individuals survive to adulthood 4. Selection The individuals with the best traits / adaptations will survive and have the opportunity to pass on it s traits to offspring. Natural selection acts on the phenotype (physical appearance), not the genotype (genetic makeup) Ex: When a predator finds its prey, it is due to the prey s physical characteristics, like color or slow speed, not the alleles (BB, Bb)

9 Peppered Moth Individuals with traits that are not well suited to their environment either die or leave few offspring. Evolution occurs when good traits build up in a population over many generations and bad traits are eliminated by the death of the individuals. Descent with Modification Descent with Modification each living species has descended, with changes, from other species over time. Common Descent all living organisms are related to one another A Which moth will the bird catch? B

10 Evidence for Evolution: Fossil Record Homologous Body Structures Vestigial Organs Embryology Biochemical Evidence The Fossil Record Fossils: a record of the history of life on Earth Archaeopteryx Missing link between reptiles and birds

11 Homologous Body Structures Homologous Body Structures: similar anatomy in different types of animals because of common ancestor Vestigial Organs Vestigial Organs: leftover traces of evolution that serve no purpose

12 Embryology Embryology: embryos of all vertebrates are very similar early on Biochemical Evidence Biochemistry: DNA with more similar sequences suggest species are more closely related EX: Humans and chimpanzees share more than 98% of identical DNA sequences

13 Coral Snake (Poisonous) Milk Snake (Not poisonous)

14 Stick Mantid

15 FRIDAY Flower Mantid Admit Ticket VIDE O CL IP Take notes on Symbiosis: Mutualism, Commensalism, and Parasitism Video Clip Exit Ticket DISC U SS ION Interspecific and Intraspecific Competition video clip Video Clip

16 Textbook Reading & Discussion Chapter 21 Interactions Among Living Things : Pages HAVE A WONDERFUL WEEKEND!