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Catalyst #6 Pg. 23

Catalyst #6 Pg. 23. Justify your answer in complete and sentences. Announcements. Evolution Quiz #2- Friday Notebook Check #1- Next Monday Will count as HW/classwork grade= 16.5% of final grade. Get Ready for Vocabulary Race- Take out whiteboard marker. BEHAVIORAL EXPECTATIONS:

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Catalyst #6 Pg. 23

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  1. Catalyst #6 Pg. 23 Justify your answer in complete and sentences.

  2. Announcements • Evolution Quiz #2- Friday • Notebook Check #1- Next Monday • Will count as HW/classwork grade= 16.5% of final grade

  3. Get Ready for Vocabulary Race- Take out whiteboard marker • BEHAVIORAL EXPECTATIONS: • Noise Level 2- Can’t hear you from a few feet away • Facing forward • Bottoms in chairs whole time • Stay in seat • DIRECTIONS: • Answer your specific question • Pass up the whiteboard • Last person in row hold up whiteboard • I’ll take 1st 2nd, and 3rd place • Team that wins will get bragging rights!

  4. Round 1 • This is a change in a species over time; process of biological change by which descendents come to differ from their ancestors. • This is a mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individualsThis type of white blood cell phagocytizes small particles • This person published On the Origin of the Species by Means of Natural Selection • This is a measure of an organism’s ability to survive and produce offspring relative to other members of a population

  5. Round 1 • This is a change in a species over time; process of biological change by which descendents come to differ from their ancestors. • Evolution • This is a mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals • natural selection • inherited trait that is selected for over time because it allows organisms to better survive in their environment • Charles Darwin • This is a measure of an organism’s ability to survive and produce offspring relative to other members of a population • fitness

  6. Round 2 • differences in physical traits of an individual from the group to which it belongs. You often give this • ability of a trait to be passsed from one generation to the next • inherited trait that is selected for over time because it allows organisms to better survive in their environment • body part that is similar in structure on different organisms but performs different functions

  7. Round 2 • differences in physical traits of an individual from the group to which it belongs. • variation • ability of a trait to be passsed from one generation to the next • inheritability • inherited trait that is selected for over time because it allows organisms to better survive in their environment • adaptation • body part that is similar in structure on different organisms but performs different functions • Homologous structure

  8. Round 3 • remnants of an organ or structure that functioned in an earlier ancestor • the study of the earliest stages of growth and development of plants and animals • collection of alleles found in all of the individuals of a population • proportion of one allele, compared with all the alleles from that trait, in the gene pool

  9. Round 3 • remnants of an organ or structure that functioned in an earlier ancestor • Vestigial structure • the study of the earliest stages of growth and development of plants and animals • embryology • collection of alleles found in all of the individuals of a population • Gene pool • proportion of one allele, compared with all the alleles from that trait, in the gene pool • Allele frequency

  10. Question of the Day Pg. 23 • Use your prior knowledge to answer the following question on pg. 23 • How does genetic drift affect the diversity of a population?

  11. Get Ready for Notes Pg. 24-25Title: Genetic DriftNo HW questions • Behavior: • Silent • Not looking at ipads • Head up • Facing forward

  12. Genetic Drift • Survivors are lucky, not more fit • Deceased are unlucky, not less fit DNA frequency in a population changes simply by CHANCE not fitness

  13. Causes of Genetic Drift • Random events: 1. natural disasters – hurricane, volcano, tsunami, earthquake, fire, etc 2. stepped on, ran over, picked up, put on a boat, stuck in a car, stuck to fur or clothing 3. at the wrong place at the wrong time

  14. FOUNDER'S EFFECT: • some individuals of a population colonize a new habitat • ex: Columbus bringing organisms to USA S. America: DNA Frequency 25% pink 75% red Spain: DNA Frequency 66% pink 33% red

  15. Bottleneck Effect: • few survivors are left to reproduce • ex Hurricane Katrina survivors! Before Katrina: DNA Frequency 66% pink 33% red After Katrina: DNA Frequency 40% pink 60% red

  16. How does genetic drift affect the diversity of a population over time?

  17. Genetic drift decreases diversity. In this case yellow and pink DNA are gone, and red DNA is now the majority. Genetic drift = decrease in DNA diversity

  18. Let's Do This Together: Allele frequency of Original Population: 13/26 X's = 50% 13/26 O's = 50% Allele frequency of New Population: 1/2 X's = 50% 1/2 O's = 50% X O X O O X X X O O O O X X X X X X X X X O O O O O O O survivors! Did this population of Rivasitus undergo genetic drift after a tornado killed all except one X and one O?

  19. Let's Do This Together: Original Population: 13/26 X's = 50% 13/26 O's = 50% New Population: 1/2 X's = 50% 1/2 O's = 50% NO DNA frequency the SAME before and after! X O O X X X O O O O X X X X X X X X X O O O O O O O X O Did this population of Rivasitus undergo genetic drift?

  20. You Try: Allele Frequency of Original Population: __/__ X's = ___% __/__ O's =___% Allele Frequency of New Population: __/__ X's = __% __/__ O's = __% X O O X X X O O X X X X O O O O XOXX O Did this population of Rivasitus undergo genetic drift?

  21. You Try: YES! DNA frequency different before and after! Original Population: 8/16 X's = 50% 8/16 O's =50% New Population: 3/5 X's = 60% 2/5 O's = 40% XOXX O X O O X X X O O X X X X O O O O Did this population of Rivasitus undergo genetic drift?

  22. Check your understanding! Watch the video then answer the questions http://glencoe.mcgraw-hill.com/sites/9834092339/student_view0/chapter20/simulation_of_genetic_drift.html On the top of page 24 write how many questions you got correct out of 5

  23. Genetic Drift Investigation PG. 26 (10 MIN) • Quietly work with your partner to answer the question on in your notebook • DO NOT WIRTE ON WORKSHEET

  24. REVIEW OF INVESTIGATION

  25. GENETIC DRIFT WITH DICE: WORM Coloring (20 MIN) PG. 26

  26. WORM REVIEW (5 MIN)

  27. ANSWER QUESTION OF THE DAY Pg.26 • How does genetic drift affect the diversity of a population? • Draw a picture to help explain your answer

  28. Evolution Video?

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