lab report 9

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Golden West College *

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Biology

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Jan 9, 2024

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A Labératory Reéoft 9: évolufion o BN : Name:’\’bw kﬂ\fi"\'g Date:fl l (fi ’an > \ e Points: o L BS “ Table #: Lab day/time: 1. For how long has there been life on Earth? 3.5 Dyo 2. For what percentage of time during the Earth’s history has life existed on Earth? & oy N St 0 = 10* hat there has been life on Earth) were 3.For what percentage of time (of the 3.5 billion years t prokaryotes the only living organisms? 35 - e R 3.5 Poer X o =HA% 4. What caused the rise in oxygen levels that occurred at about 2.4 b; an advantage? FR T Phstosyniresis i O\X\]%E‘(\' aMloweA for TA\O\W 25 P{‘OA\)CQ-\\DQ O‘Q 2 COZOV\QE‘;\D(‘D*% Q,O\\’\'h ‘F‘FDM VN Ve A\ {‘Y\\W‘ 5. For about how long did dinosaurs roam the Earth and how long ago did they go extinct? Roamed for \"% Y\ver Extinctaround 2 S 1) o -2\\;'\B = W\\;C\T mplete 6. For about how long has a human-related species (Hominina) existed as supported by near-col H. Y mfllon Nears 7. Did humans and dinosaurs ever co-exist? 8. How old is the oldest fossil that you have seen today and from what kind of organism is it? pithe \owoeson Zloest| 345 vovyen 9. A mold is when rock forms around an object and leaves the imprint of the decomposed object in the rock. Petrifaction is when the organic material is itself converted into stone (for example petrified wood). List one fossil you have seen today that is a mold and one fossil that is petrified. UnKnown Plony fivpeine S ofed Werbr (m/g\s\j (v \/.a2 » {Q(LOC;)t L‘\Yfi\g\d\\}@?\‘\”{ff@(\) I V= Nillion Yeors ogo @ld) < i ’ 10. How would it be beneficial to scientists if the fossil record was much more complete? - onore Conmplele eNidene 10 \Work \With. 101 ya? Why might the higher levels be Aon of 08robic Ce\lo\sr \regx;. fossil evidence?

Activity 2-1 Table 2-1 Natural selection Black beans e Starting /Surviving DR e e Generation 1 107 ) L Generation 2 L Extinct? P Generation 3 Generation 4 Extinct? RS tat look like? What did your second habitat look like? (Describe the fabric.) 10/0 — Aol & 2L ()(0— D/C— G/'f/ 11. What did your first habi First habitat- '10/0\ ., 10 / v - Second habitat- 2 & /—1 A 30/ 3 — 12. Were there any populations of seeds that “survived” in high numbers in the first habitat, but did ‘ poorly in the second? If so, which ones? i ; \ES) €4 beans d\DA Worse fn 208 b Yoo «survived” with low numbers in the first habitat, but did 13. Were there any populations of seeds that better in the second? If so, which ones? = NES, wrovN \oeans 14. Why did certain seeds survive in higher numbers than others? 4 ooV of some \VRANS &xuc P OY(S 66%“\5 on haotteds Activity 2-2 P 3y Table 2-2 Genetic drift ( )$\AO\'\(\ Black Red beans beans beans seeds 1‘ i} White \ Sunflower SMH/SuWiﬂng Smx}jgg/Sugﬂving Starting /Surviving Stamng/Surv’\V\ng | Generation 1 M/L_ @ /$ } \ (IJ})/\/\ ) Generation 2 10/. 5 Extinct? \{ es 102

f‘\«A(fk IJ‘ Name_ Unit 9: Evolution Cully timsa ,/(1 i,\f\ - Activity 2-2 continued : 15. How do your genetic drift data compare with your data from the natural selection exercise? (Were ‘;UL&I‘“IUU Did the same seeds go extinct?) C e S \WOYe suCCessh Rk feceny the same : seeds g 16. Would a habitat change have aﬂec(ed your genetic drift results? Why or why not? NO \ \0RLOISE, QRN A& %5 CoNdom Onk ngt atlecke oN oot vak 17. Would a well-camouflaged organism have an advantage when genetic drift is at work ona population? Why or why not? A € MO ) \QQ,CC\\.YQQ QFX\Q c A‘(\ ~ s Y‘C\(\&M ¢ ey dothny w01 ek Station 1: Family Hominidae (Homo sapiens, Homo habilus, Paranthropus boisei, Pan troglodytes- chimpanzee) 18. Of those specimens on display, which member of the family Hominidae is most closely related to Homo sapiens? Hint: think about the taxonomic levels and how organisms are named. \\fawgf Nootlus WJ\ v Bhare thye =eme, 19. List three ferences you see between mo sapiens and Paranthropus boisei skulls. A% — Moy B : B e e 20. What are some characteristics of the chimpanzee's| efeton that make this organism suited for living in and navigating through trees? NN 21. Of the characteristics you listed in #20, which have humans retained, and which have humans “lost” or adaptéd further? OV 22. What adaptations to land life, as opposed to tree life, can you see in Homo sapiens? M Omnole Station 2: Mammalian skull shape 23. Why might the mammals shown at Station 2 have evolved different skull shapm" 8 a3 \ot o Dn e e ‘\\r\rz\/ e \1\\\ iren—t— ko) SOucCes, 103

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