Upcoming& Collab.&Schedule&Fri&4/10& Quarter&3&ends&Fri&4/10& & ToC&#7&due!& Biology Day 79. Announcements& Q3&Midterm&&

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Tyrone Garrett
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1 Biology Day 79 Do)Now:& Prac&ce(Midterm ( 1. Write(down(today s(flt( 2. Summarize(your(spring(break(in(3D5( sentences.((((( 3. Define(the(term( natural(selec&on ( Monday, April 6 Tuesday, April 7, 2015 Announcements& Want&to&cash&in&cardinal&cash?& Go&to&student&store&on&Wednesdays&& Upcoming& Collab.&Schedule&Fri&4/10& Quarter&3&ends&Fri&4/10& & Announcements& Q3&Midterm&& P.1:&Tuesday& P.&3,&6:&Wednesday& ToC&#7&due!& P.1:&Thursday& P.&3,&6:&Friday& 1&

2 Planner: Natural Selection WS Planner: Natural Selection WS Table of Contents #7 25. Practice Midterm Table of Contents #8 1. Natural Selection Review WS Standard HS-LS 4-1: Communicate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence FLT I will be able to self-assess my mastery of evolution and natural selection by completing Practice Midterm Brainstorm Protocol 1. The goal is to generate the longest possible list as a group 2. When prompted to do so, identify who will provide the first answer 3. Then, go clockwise to the next person. 4. Do not skip people and do not say an answer for them. 5. Only say ONE answer at a time 6. Quantity over quality 7. Stay on topic 8. Pencils must be down when I say time is up 9. Lists must be exactly the same 2&

3 Brainstorm Protocol 1. Clockwise order 2. No skipping 3. Only say ONE answer at a time 4. Quantity over quality 5. Stay on topic 6. Pencils down when time is up 7. Lists must be exactly the same Brainstorm Protocol Identify the person in your group whose name comes first alphabetically This person will be starting Number your paper underneath your do-now Brainstorm Protocol You will have one minute and thirty seconds to generate answers The winning group will get +5 dojo points each or a treat Your topic is. Brainstorm Protocol Topic: Evolution! 1:30 1:29 1:28 1:27 1:26 1:25 1:24 1:23 1:22 1:21 1:20 1:19 1:18 1:17 1:16 1:15 1:14 1:13 1:12 1:11 1:10 1:09 1:08 1:07 1:06 1:05 1:04 1:03 1:02 1:01 1:00 0:59 0:58 0:57 0:56 0:55 0:54 0:53 0:52 0:51 0:50 0:49 0:48 0:47 0:46 0:45 0:44 0:43 0:42 0:41 0:40 0:39 0:38 0:37 0:36 0:35 0:34 0:33 0:32 0:31 0:30 0:29 0:28 0:27 0:26 0:25 0:24 0:23 0:22 0:21 0:20 0:19 0:18 0:17 0:16 0:15 0:14 0:13 0:12 0:11 0:10 0:09 0:08 0:07 0:06 0:05 0:04 0:03 0:02 0:01 End 1:30 3&

4 Brainstorm Protocol How d we do? Classwork In pairs or independently, complete the practice test When finished, get your answers scanned Fix any answers as needed When finished, you can work on binder assignments as needed Biology Day 80 Tuesday, April 7 Wednesday, April 8, 2015 Midterm(Day(DoDNow (& 1. Write(today s(flt(( 2. ( (is(the(scien&st(who(came(up( with(the(theory(of( ( (amer( studying(on(the(galapagos.((( 3. (structures(have(similar(structures,( but(different(func&ons.((( 4. (structures(are(ancestral(and(no( longer(have(a(use( 5. (structures(have(similar(func&ons,( but(are(unrelated.(( 4&

5 Announcements& Want&to&cash&in&cardinal&cash?& Go&to&student&store&on&Wednesdays&& Upcoming& Collab.&Schedule&Fri&4/10& Quarter&3&ends&Fri&4/10& & Announcements& Q3&Midterm&Today&!&!&!&!&!& ToC&#7&due!& P.1:&Thursday& P.&3,&6:&Friday& Planner: Finish Vocab ToC due Table of Contents #8 1. Natural Selection Review WS 2. Midterm Day Do-Now 3. Ch. 11 Vocab A 4. Ch. 11 Vocab B Standard HS-LS 4-1: Communicate scientific information that common ancestry and biological evolution are supported by multiple lines of empirical evidence FLT I will be able to demonstrate my mastery of evolution and natural selection by completing Q3 Midterm! 5&

6 Biology Day 81 Thursday, April 9 Friday, April 10, 2015 Notes:(Gene&c(Varia&on (& 1. Write(today s(flt(( 2. Which(evolves:(an(individual,(a( popula&on,(or(a(species?( (( 3. What(is(an(adapta&on?(( 4. What(kind(of(adapta&ons(do(humans( have?((try(to(think(of(at(least(two.( 5. Turn(in(your(ToC(or(Incomplete( Assignment(Form((must(complete(doD now(1d4(first)( Announcements& Want&to&cash&in&cardinal&cash?& Go&to&student&store&on&Wednesdays&& Upcoming& Collab.&Schedule&today&!& Quarter&3&ends&Fri&4/10& & 6&

7 Planner: Study Guide 11.2 Test re-take Table of Contents #8 5. Notes: Genetic Variation 6. Power Notes Study Guide 11.2 Standard HS-LS 4-4: Construct an explanation based on evidence for how natural selection leads to adaptation of populations FLT I will be able to explain three ways natural selection can change the distribution of a trait by completing 11.2 Power Notes 11.1 Cornell Notes on same paper as do-now 11.1: Variation Key Concept: A population shares a gene pool Yellow = Left Green = Right 7&

8 Recall Natural selection acts on existing variation (different phenotypes) A population MUST have variation before natural selection can take place 8&

9 Population A population = a group of organisms of the same species living in the same place at the same time! Individuals cannot evolve.! Populations CAN evolve. 9&

Gene Pools Gene Pool = ALL of the alleles in a

Allele Frequency = measure of how common an allele

genetic variation come from in the first place?

Recombination Mutations Mutations = random changes

10 Gene Pools Gene Pool = ALL of the alleles in a population! Allele Frequency = measure of how common an allele is in a population! More common = higher frequency Where does genetic variation come from in the first place? Two main sources of variation:! 1. Mutations! 2. Recombination Mutations Mutations = random changes in DNA. Passed on only if they occur in gametes. (Body cells will not pass on!) 10&

11 Recombination Recombination = new allele combinations form from crossing over during meiosis Variation = Survival! Example:! In a population of penguins, there are normal size penguins, fat penguins, and slender penguins Why is genetic variation important? Genetic variation increases the likelihood that some individuals in a population will survive!!!! More variation = better chance of survival Variation = Survival! Example:! Who survives when it gets really cold? 11&

12 Variation = Survival! Example:! Who survives when food is scarce on land and the penguins need to dive for fish? Pair-Share-Respond 1. Deﬁne:(gene(pool.((( 2. What(does(it(mean(if(a(trait(has(a(high( allelic(frequency?( 3. What(are(two(sources(of(gene&c( varia&on?( 4. When(can(muta&ons(be(inherited(and( spread(through(a(popula&on?( 5. Why(is(gene&c(varia&on(important?& Variation = Survival! If these variations didn t exist...! Then an environmental change could eliminate the entire population :o( 11.2 Power Notes Key Concept: Populations, not individuals, evolve 12&

Normal Distribution Definition: Bell-shaped curve.

NOT under natural selection Microevolution Observable change in

Occur over shorter periods of time (example: pesticide resistance

13 Normal Distribution Definition: Bell-shaped curve. Intermediate traits have the highest frequency, & extreme traits the lowest.! A population follows a normal distribution when: population is NOT under natural selection Microevolution Observable change in allele frequencies of a population over time! Occur over shorter periods of time (example: pesticide resistance in insects)! Can result from natural selection 3 Pathways of Natural Selection 1. Directional Selection! 2. Stabilizing Selection! 3. Disruptive Selection 13&

14 Directional Selection Definition:! Favors phenotypes at one extreme of a trait (left or right)! What it looks like: Normal curve shifted to the right or left! Example:! Drug-resistance in bacteria! Giraffe s necks 14&

15 Stabilizing Selection Definition:! Favors intermediate (middle) phenotypes! What it looks like:! graph should show narrower distribution with peak in the middle (at the mean phenotype)! Example:! Baby size! Size of gall fly galls 15&

16 Disruptive Selection Definition:! Favors phenotypes at BOTH extremes of a curve! What it looks like:! Two peaks at the sides, with a dip in the middle! Example:! Some fur/body coloring! Finch beaks 16&

17 1. A bell curve with no shifts! 2. A curve with two peaks to the left and right, and a dip in the middle.! 3. A type of bird lays about 5 eggs at time. Fewer eggs lowers the chance of survival, and too many eggs attracts a lot of predators.! 4. Bacteria develop resistance to antibiotics over time! 5. Small spiders have a hard time getting food, and large spiders are easily spotted by predators.! 6. Finches beaks get smaller and larger depending on the food they eat. Classwork Study Guide/Reinforcement Fill in test results % = (points received/points possible) x 100 Turn in ToC If your ToC is not ready, you must fill out and turn in an incomplete assignment form 17&

Exempt IF. June 1 st - 2 nd : Senior Finals Trade in dojo points! 5/23/16. Turn in by Thursday, May 26 th Seniors, turn in by May 23 rd

Exempt IF. June 1 st - 2 nd : Senior Finals Trade in dojo points! 5/23/16. Turn in by Thursday, May 26 th Seniors, turn in by May 23 rd 5/23/16 Biology Monday, May 16, 2016 Do-Now: Kahoot Do-Now 1. Write down today s FLT 2. Write three things you need to do for this class in order to raise or maintain your grade. 3. What science class