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- how did the K-Pg (aka Cretaceous–Paleogene) mass extinction gave new ecological opportunities to mammals leading to adaptive radiation?375 million years ago, the population of organisms we call Tiktaalik had variation in many aspects of the appendages including the bones, muscles and nerves. What evolutionary force was likely most responsible for rapid adaptation and the relatively rapid evolution of limbs in this lineage? (A) natural selection (B) NONE of these C) mutations D genetic drift (E) speciationWe have studied how the six major primate groups evolved, with the most recent group being the hominins.The hominins branched off from main ape group around 7 million years ago.According to our lessons explain your reasoning as to whether there is a missing link,or one single specimen that embodies both ape and hominin traits, that serves as a transition between what is clearly ape and what is clearly hominin?What have you found most interesting about the beginning of hominin evolution and why?
- 1) Does the fossil record indicate that life first appeared in the water or on the land? WATER or LAND 2) Does the fossil record indicate that invertebrates (trilobites) and vertebrates (fish) evolved during the same geological period? YES or NO 3) Does the fossil record indicate that birds evolved from mammals or reptiles? MAMMALS or REPTILES 4) The fossil record indicates that hominids evolved from an ancestral hominoid approximately? 4-5 million years ago or 1-2 million years ago What kinds of organisms appear earliest in the fossil record? PROKARYOTES or EUKARYOTESA number of scientists believe that the Permian extinction was caused by huge volcanic lava flows (from the Siberian traps) that may have caused low oxygen concentrations compared to the high oxygen levels in the Permian. Does this low oxygen level after the Permian extinction make it likely that dinosaurs, especially large ones, did not evolve immediately after the Permian extinction (252 million years ago)? Why or why not?How is it that most, if not all, of the extant animal phyla today evolved during the Cambrian period if so many massive extinction events have taken place since then?
- Adaptive radiation is common following a period of mass extinction, probably because (a) the survivors of a mass extinction are remarkably well adapted to their environment (b) the unchanging environment following a mass extinction drives the evolutionary process (c) many adaptive zones are empty(d) many ecological niches are filled (e) the environment induces changes in the timing of development for many species1. Why is the evolution of man considered as a complex process? 2. How does the Philippine government show that it values its human resources? 3. Why is Tabon Man considered as the oldest human remain excavated in the Philippines? 4. The Filipinos were civilized even before the coming of the Spaniards. Explain 5. The culture during pre-colonial period was shaped as a consequence of continued contacts with the great traditions of Asia. Explain 6. How large was the barangay was the barangay during the ancient period? Compare this with the present barangay. 7. The significant of History to our times is being told in this saying "The neglect of the past would be the failure of the present time." Explain 8. Can we stand as a State even without having the existence of other countries in the world? 9. What is the reason why there is a need of having different culture and values? 10. What approach is necessary in order to put as one the diversified culture and values? 11. Is being an…Mammals, like humans and apes, have 5 digits on their fore and hind limbs. Modern horses have 1. How might you recontrust the ancestral state of mammal tow number?a) investigate the number of toes on all extant horses and apesb) investigate the number of toes for other mammals and use parsimony to deduce the ancestral statec) investigate the number of toes for an outgroup that is closely related to mammals, for example reptiles or amphibiansd) either b or ce) all of the above
- In what order of descent did the species of Homo overtake one another? What was discovered in the caves at Atapuerca, in northern Spain and what does this say about archaic Homo sapiens (Homo heidelbergensis in this case)? What is “Excalibur” and what did it signify (Maybe)? In what ways did our ideas about Neanderthals change as the 20th century proceeds? What recent discovery in the Meuse Valley, Belgium, helped to refine our views of Neanderthals? What kind of research is going at the Max Planck Institute in Leipzig, Germany, regarding evolutionary studies? Why are children’s teeth so valuable to archaeologists? Why was hunting such a risky business for Neanderthals? Why did Neanderthals go extinct about 25,000 years ago? (Note, since this film was made our ideas about this have changed as you will see in next week's film.) What is “the bottleneck effect”?What do the multiregional and out-of-Africa hypotheses predict about the age of the common ancestor of all humans living today?a)Describe key developments related to primate evolution associated with the time periods below: Palaeocene: Eocene: Oligocene: Miocene: b)List plausible descendants to these ancestral primates: Omomyyoid: Adapiform: Aegyptopithecus: Khoratpithecus: Proconsul: